30986156 has 12 divisors (see below), whose sum is σ = 54313392. Its totient is φ = 15468048.

The previous prime is 30986147. The next prime is 30986159. The reversal of 30986156 is 65168903.

It is not an unprimeable number, because it can be changed into a prime (30986159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3320 + ... + 8543.

It is an arithmetic number, because the mean of its divisors is an integer number (4526116).

Almost surely, 2^30986156 is an apocalyptic number.

It is an amenable number.

30986156 is a deficient number, since it is larger than the sum of its proper divisors (23327236).

30986156 is a wasteful number, since it uses less digits than its factorization.

30986156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12520 (or 12518 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 30986156 is about 5566.5209960980. The cubic root of 30986156 is about 314.0912956164.

The spelling of 30986156 in words is "thirty million, nine hundred eighty-six thousand, one hundred fifty-six".