30630972 has 12 divisors (see below), whose sum is σ = 71472296. Its totient is φ = 10210320.

The previous prime is 30630961. The next prime is 30631001. The reversal of 30630972 is 27903603.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276279 + ... + 1276302.

Almost surely, 2^30630972 is an apocalyptic number.

It is an amenable number.

30630972 is an abundant number, since it is smaller than the sum of its proper divisors (40841324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30630972 is a wasteful number, since it uses less digits than its factorization.

30630972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552588 (or 2552586 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 30630972 is about 5534.5254539120. The cubic root of 30630972 is about 312.8865726931.

The spelling of 30630972 in words is "thirty million, six hundred thirty thousand, nine hundred seventy-two".