56907890 has 16 divisors (see below), whose sum is σ = 110314008. Its totient is φ = 21012096.

The previous prime is 56907883. The next prime is 56907913. The reversal of 56907890 is 9870965.

It can be written as a sum of positive squares in 4 ways, for example, as 21967969 + 34939921 = 4687^2 + 5911^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218747 + ... + 219006.

Almost surely, 2^56907890 is an apocalyptic number.

56907890 is a deficient number, since it is larger than the sum of its proper divisors (53406118).

56907890 is a wasteful number, since it uses less digits than its factorization.

56907890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437773.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 56907890 is about 7543.7318351065. The cubic root of 56907890 is about 384.6426999369.

The spelling of 56907890 in words is "fifty-six million, nine hundred seven thousand, eight hundred ninety".