30 (thirty) is the natural number following 29 and preceding 31. 30 is a square pyramidal number. 30 is an even, composite, and pronic number. With 2, 3, and 5 as its prime factors, it is a regular number and the first sphenic number, the smallest of the form , where r is a prime greater than 3.

30（三十）是29与31之间的自然数、正整数，是一个偶数，也是一个有理数。30=2*3*5。

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2023年6月17日 · Number 30 holds a special place in mathematics as an even composite number. It is formed by multiplying 2 and 15, and it falls between the prime numbers 29 and 31. Being composite, it has divisors other than 1 and itself, such as 2, 3, 5, and 10.

2016年1月29日 · The number 30 is known as a Harshad number, or a number divisible by the sum of its digits. In Back to The Future , Marty McFly traveled 30 years back in time. The number 30, separated by two hyphens, is used to indicate the end of a newspaper story (-30-).

30 is the smallest sphenic number; divisible by exactly 3 distinct primes (2, 3 and 5) and a total of 8 divisors (see bullet, directly above). 30 is the smallest of the four terms in the arithmetic progression of positive integers possessing three distinct prime factors: 30-66-102-138. 30 is smallest number not the sum of three integer cubes.

30 is a number after 29 and before 31. Its prime factorization is 3*2*5.

Your guide to the number 30, an even composite number composed of three distinct primes. Mathematical info, prime factorization, fun facts and numerical data for STEM, education and fun.

30 is the first sphenic number, that is the smallest number with 3 distinct prime divisors; 30 is the largest number with the property that all smaller numbers relatively prime to it are prime.

Is 30 an odd number? 30 is NOT an odd number: Is 30 an even number? 30 is an even number: Is 30 a palindrome? 30 is NOT a palindrome number: Is 30 a triangle number? 30 is NOT a triangle number: 30 in other Bases. Base 2 (Binary) 11110 2: Base 3 (Ternary) 1010 3: Base 4 (Quaternary) 132 4: Base 5 (Quinary) 110 5: Base 6 (Senary) 50 6: