30972898 has 32 divisors (see below), whose sum is σ = 52254720. Its totient is φ = 13650000.

The previous prime is 30972889. The next prime is 30972911. The reversal of 30972898 is 89827903.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123273 + ... + 123523.

It is an arithmetic number, because the mean of its divisors is an integer number (1632960).

Almost surely, 2^30972898 is an apocalyptic number.

30972898 is a deficient number, since it is larger than the sum of its proper divisors (21281822).

30972898 is a wasteful number, since it uses less digits than its factorization.

30972898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 30972898 is about 5565.3299992004. The cubic root of 30972898 is about 314.0464926356.

It can be divided in two parts, 3097 and 2898, that added together give a palindrome (5995).

The spelling of 30972898 in words is "thirty million, nine hundred seventy-two thousand, eight hundred ninety-eight".