56280388 has 6 divisors (see below), whose sum is σ = 98490686. Its totient is φ = 28140192.

The previous prime is 56280383. The next prime is 56280397. The reversal of 56280388 is 88308265.

It can be written as a sum of positive squares in only one way, i.e., 36990724 + 19289664 = 6082^2 + 4392^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 56280388.

It is not an unprimeable number, because it can be changed into a prime (56280383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7035045 + ... + 7035052.

Almost surely, 2^56280388 is an apocalyptic number.

It is an amenable number.

56280388 is a deficient number, since it is larger than the sum of its proper divisors (42210298).

56280388 is a wasteful number, since it uses less digits than its factorization.

56280388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14070101 (or 14070099 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 56280388 is about 7502.0255931315. The cubic root of 56280388 is about 383.2237011417.

The spelling of 56280388 in words is "fifty-six million, two hundred eighty thousand, three hundred eighty-eight".