56886840 has 64 divisors (see below), whose sum is σ = 189626400. Its totient is φ = 15169536.

The previous prime is 56886839. The next prime is 56886847. The reversal of 56886840 is 4868865.

56886840 is a `hidden beast` number, since 568 + 8 + 6 + 84 + 0 = 666.

It is a super-2 number, since 2×56886840² = 6472225130371200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56886847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25257 + ... + 27416.

Almost surely, 2^56886840 is an apocalyptic number.

It is an amenable number.

56886840 is an abundant number, since it is smaller than the sum of its proper divisors (132739560).

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

56886840 is a wasteful number, since it uses less digits than its factorization.

56886840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52693 (or 52683 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 56886840 is about 7542.3365080060. The cubic root of 56886840 is about 384.5952681581.

The spelling of 56886840 in words is "fifty-six million, eight hundred eighty-six thousand, eight hundred forty".