56297680 has 20 divisors (see below), whose sum is σ = 130892292. Its totient is φ = 22519040.

The previous prime is 56297669. The next prime is 56297699. The reversal of 56297680 is 8679265.

It can be written as a sum of positive squares in 2 ways, for example, as 30206016 + 26091664 = 5496^2 + 5108^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351781 + ... + 351940.

Almost surely, 2^56297680 is an apocalyptic number.

It is an amenable number.

56297680 is an abundant number, since it is smaller than the sum of its proper divisors (74594612).

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

56297680 is a wasteful number, since it uses less digits than its factorization.

56297680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703734 (or 703728 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 56297680 is about 7503.1779933572. The cubic root of 56297680 is about 383.2629452781.

The spelling of 56297680 in words is "fifty-six million, two hundred ninety-seven thousand, six hundred eighty".