30157912 has 32 divisors (see below), whose sum is σ = 59482800. Its totient is φ = 14313600.

The previous prime is 30157891. The next prime is 30157913. The reversal of 30157912 is 21975103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30157913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13087 + ... + 15217.

Almost surely, 2^30157912 is an apocalyptic number.

It is an amenable number.

30157912 is a deficient number, since it is larger than the sum of its proper divisors (29324888).

30157912 is a wasteful number, since it uses less digits than its factorization.

30157912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227 (or 2223 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 30157912 is about 5491.6219826204. The cubic root of 30157912 is about 311.2674849185.

The spelling of 30157912 in words is "thirty million, one hundred fifty-seven thousand, nine hundred twelve".