56890440 has 48 divisors (see below), whose sum is σ = 184895100. Its totient is φ = 15170688.

The previous prime is 56890399. The next prime is 56890459. The reversal of 56890440 is 4409865.

56890440 is a `hidden beast` number, since 568 + 90 + 4 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 55980324 + 910116 = 7482^2 + 954^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 56890395 and 56890404.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78655 + ... + 79374.

Almost surely, 2^56890440 is an apocalyptic number.

It is an amenable number.

56890440 is an abundant number, since it is smaller than the sum of its proper divisors (128004660).

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

56890440 is a wasteful number, since it uses less digits than its factorization.

56890440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158046 (or 158039 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 56890440 is about 7542.5751570667. The cubic root of 56890440 is about 384.6033808356.

The spelling of 56890440 in words is "fifty-six million, eight hundred ninety thousand, four hundred forty".