56990840 has 16 divisors (see below), whose sum is σ = 128229480. Its totient is φ = 22796320.

The previous prime is 56990833. The next prime is 56990909. The reversal of 56990840 is 4809965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 712346 + ... + 712425.

Almost surely, 2^56990840 is an apocalyptic number.

It is an amenable number.

56990840 is an abundant number, since it is smaller than the sum of its proper divisors (71238640).

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

56990840 is a wasteful number, since it uses less digits than its factorization.

56990840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424782 (or 1424778 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 56990840 is about 7549.2277750774. The cubic root of 56990840 is about 384.8294966605.

The spelling of 56990840 in words is "fifty-six million, nine hundred ninety thousand, eight hundred forty".