56923840 has 28 divisors (see below), whose sum is σ = 135550656. Its totient is φ = 22769408.

The previous prime is 56923817. The next prime is 56923879. The reversal of 56923840 is 4832965.

It is a zygodrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 56923840.

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, 88624 + ... + 89263.

Almost surely, 2^56923840 is an apocalyptic number.

It is an amenable number.

56923840 is an abundant number, since it is smaller than the sum of its proper divisors (78626816).

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

56923840 is a wasteful number, since it uses less digits than its factorization.

56923840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177904 (or 177894 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 56923840 is about 7544.7889301159. The cubic root of 56923840 is about 384.6786321424.

The spelling of 56923840 in words is "fifty-six million, nine hundred twenty-three thousand, eight hundred forty".