56807388 has 72 divisors (see below), whose sum is σ = 157772160. Its totient is φ = 17091360.

The previous prime is 56807369. The next prime is 56807389. The reversal of 56807388 is 88370865.

56807388 is a `hidden beast` number, since 568 + 0 + 7 + 3 + 88 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56807389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65703 + ... + 66561.

It is an arithmetic number, because the mean of its divisors is an integer number (2191280).

Almost surely, 2^56807388 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 56807388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78886080).

56807388 is an abundant number, since it is smaller than the sum of its proper divisors (100964772).

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

56807388 is a wasteful number, since it uses less digits than its factorization.

56807388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047 (or 1042 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 56807388 is about 7537.0675995376. The cubic root of 56807388 is about 384.4161341662.

The spelling of 56807388 in words is "fifty-six million, eight hundred seven thousand, three hundred eighty-eight".