30974157 has 20 divisors (see below), whose sum is σ = 46649856. Its totient is φ = 20480040.

The previous prime is 30974149. The next prime is 30974159. The reversal of 30974157 is 75147903.

It is a happy number.

It is not a de Polignac number, because 30974157 - 2³ = 30974149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30974159) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8782 + ... + 11792.

Almost surely, 2^30974157 is an apocalyptic number.

It is an amenable number.

30974157 is a deficient number, since it is larger than the sum of its proper divisors (15675699).

30974157 is a wasteful number, since it uses less digits than its factorization.

30974157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150 (or 3141 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 30974157 is about 5565.4431090435. The cubic root of 30974157 is about 314.0507477447.

The spelling of 30974157 in words is "thirty million, nine hundred seventy-four thousand, one hundred fifty-seven".