30512056 has 16 divisors (see below), whose sum is σ = 57319200. Its totient is φ = 15226944.

The previous prime is 30512051. The next prime is 30512063. The reversal of 30512056 is 65021503.

It is a happy number.

It is a super-2 number, since 2×30512056² = 1861971122694272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30512051) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1201 + ... + 7903.

It is an arithmetic number, because the mean of its divisors is an integer number (3582450).

Almost surely, 2^30512056 is an apocalyptic number.

It is an amenable number.

30512056 is a deficient number, since it is larger than the sum of its proper divisors (26807144).

30512056 is a wasteful number, since it uses less digits than its factorization.

30512056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7278 (or 7274 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 30512056 is about 5523.7718997077. The cubic root of 30512056 is about 312.4811500097.

Adding to 30512056 its reverse (65021503), we get a palindrome (95533559).

The spelling of 30512056 in words is "thirty million, five hundred twelve thousand, fifty-six".