56814440 has 32 divisors (see below), whose sum is σ = 129590280. Its totient is φ = 22413312.

The previous prime is 56814437. The next prime is 56814473. The reversal of 56814440 is 4441865.

It can be written as a sum of positive squares in 4 ways, for example, as 53027524 + 3786916 = 7282^2 + 1946^2 .

It is a junction number, because it is equal to n+sod(n) for n = 56814397 and 56814406.

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, 6809 + ... + 12648.

Almost surely, 2^56814440 is an apocalyptic number.

It is an amenable number.

56814440 is an abundant number, since it is smaller than the sum of its proper divisors (72775840).

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

56814440 is a wasteful number, since it uses less digits than its factorization.

56814440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19541 (or 19537 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 56814440 is about 7537.5354062187. The cubic root of 56814440 is about 384.4320404916.

The spelling of 56814440 in words is "fifty-six million, eight hundred fourteen thousand, four hundred forty".