56992640 has 32 divisors (see below), whose sum is σ = 136249560. Its totient is φ = 22796800.

The previous prime is 56992613. The next prime is 56992651. The reversal of 56992640 is 4629965.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×56992640² = 6496322028339200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 43886 + ... + 45165.

Almost surely, 2^56992640 is an apocalyptic number.

It is an amenable number.

56992640 is an abundant number, since it is smaller than the sum of its proper divisors (79256920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56992640 is an equidigital number, since it uses as much as digits as its factorization.

56992640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89070 (or 89058 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 56992640 is about 7549.3469916278. The cubic root of 56992640 is about 384.8335481057.

The spelling of 56992640 in words is "fifty-six million, nine hundred ninety-two thousand, six hundred forty".