30972896 has 12 divisors (see below), whose sum is σ = 60977952. Its totient is φ = 15486432.

The previous prime is 30972889. The next prime is 30972911. The reversal of 30972896 is 69827903.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

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 as a sum of consecutive naturals, namely, 483920 + ... + 483983.

It is an arithmetic number, because the mean of its divisors is an integer number (5081496).

Almost surely, 2^30972896 is an apocalyptic number.

It is an amenable number.

30972896 is a deficient number, since it is larger than the sum of its proper divisors (30005056).

30972896 is an equidigital number, since it uses as much as digits as its factorization.

30972896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967913 (or 967905 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 30972896 is about 5565.3298195165. The cubic root of 30972896 is about 314.0464858760.

The spelling of 30972896 in words is "thirty million, nine hundred seventy-two thousand, eight hundred ninety-six".