56407020 has 72 divisors (see below), whose sum is σ = 167828304. Its totient is φ = 14152704.

The previous prime is 56407019. The next prime is 56407061. The reversal of 56407020 is 2070465.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15714 + ... + 18966.

Almost surely, 2^56407020 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 56407020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83914152).

56407020 is an abundant number, since it is smaller than the sum of its proper divisors (111421284).

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

56407020 is a wasteful number, since it uses less digits than its factorization.

56407020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3299 (or 3280 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 56407020 is about 7510.4607049102. The cubic root of 56407020 is about 383.5109061774.

Adding to 56407020 its reverse (2070465), we get a palindrome (58477485).

The spelling of 56407020 in words is "fifty-six million, four hundred seven thousand, twenty".