30930972 has 24 divisors (see below), whose sum is σ = 72919056. Its totient is φ = 10203648.

The previous prime is 30930961. The next prime is 30931009. The reversal of 30930972 is 27903903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12123 + ... + 14450.

It is an arithmetic number, because the mean of its divisors is an integer number (3038294).

Almost surely, 2^30930972 is an apocalyptic number.

It is an amenable number.

30930972 is an abundant number, since it is smaller than the sum of its proper divisors (41988084).

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

30930972 is a wasteful number, since it uses less digits than its factorization.

30930972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26677 (or 26675 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 33.

The square root of 30930972 is about 5561.5620108024. The cubic root of 30930972 is about 313.9047272047.

The spelling of 30930972 in words is "thirty million, nine hundred thirty thousand, nine hundred seventy-two".