56990256 has 80 divisors (see below), whose sum is σ = 157097088. Its totient is φ = 17740800.

The previous prime is 56990243. The next prime is 56990279. The reversal of 56990256 is 65209965.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172011 + ... + 172341.

Almost surely, 2^56990256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56990256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78548544).

56990256 is an abundant number, since it is smaller than the sum of its proper divisors (100106832).

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

56990256 is a wasteful number, since it uses less digits than its factorization.

56990256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 56990256 is about 7549.1890955254. The cubic root of 56990256 is about 384.8281821733.

The spelling of 56990256 in words is "fifty-six million, nine hundred ninety thousand, two hundred fifty-six".