56347904 has 36 divisors (see below), whose sum is σ = 114625476. Its totient is φ = 27635712.

The previous prime is 56347883. The next prime is 56347919. The reversal of 56347904 is 40974365.

It can be written as a sum of positive squares in 2 ways, for example, as 16000000 + 40347904 = 4000^2 + 6352^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11492 + ... + 15644.

It is an arithmetic number, because the mean of its divisors is an integer number (3184041).

Almost surely, 2^56347904 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 56347904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57312738).

56347904 is an abundant number, since it is smaller than the sum of its proper divisors (58277572).

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

56347904 is an equidigital number, since it uses as much as digits as its factorization.

56347904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222 (or 4208 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 56347904 is about 7506.5240957450. The cubic root of 56347904 is about 383.3768829329.

The spelling of 56347904 in words is "fifty-six million, three hundred forty-seven thousand, nine hundred four".