30972892 has 6 divisors (see below), whose sum is σ = 54202568. Its totient is φ = 15486444.

The previous prime is 30972889. The next prime is 30972911. The reversal of 30972892 is 29827903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3871608 + ... + 3871615.

Almost surely, 2^30972892 is an apocalyptic number.

It is an amenable number.

30972892 is a deficient number, since it is larger than the sum of its proper divisors (23229676).

30972892 is a wasteful number, since it uses less digits than its factorization.

30972892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7743227 (or 7743225 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 30972892 is about 5565.3294601488. The cubic root of 30972892 is about 314.0464723568.

The spelling of 30972892 in words is "thirty million, nine hundred seventy-two thousand, eight hundred ninety-two".