56708720 has 20 divisors (see below), whose sum is σ = 131847960. Its totient is φ = 22683456.

The previous prime is 56708693. The next prime is 56708741. The reversal of 56708720 is 2780765.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354350 + ... + 354509.

It is an arithmetic number, because the mean of its divisors is an integer number (6592398).

Almost surely, 2^56708720 is an apocalyptic number.

It is an amenable number.

56708720 is an abundant number, since it is smaller than the sum of its proper divisors (75139240).

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

56708720 is a wasteful number, since it uses less digits than its factorization.

56708720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708872 (or 708866 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 56708720 is about 7530.5192384058. The cubic root of 56708720 is about 384.1934427554.

The spelling of 56708720 in words is "fifty-six million, seven hundred eight thousand, seven hundred twenty".