56720310 has 16 divisors (see below), whose sum is σ = 136128816. Its totient is φ = 15125408.

The previous prime is 56720309. The next prime is 56720333. The reversal of 56720310 is 1302765.

It is a super-2 number, since 2×56720310² = 6434387132992200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945309 + ... + 945368.

It is an arithmetic number, because the mean of its divisors is an integer number (8508051).

Almost surely, 2^56720310 is an apocalyptic number.

56720310 is an abundant number, since it is smaller than the sum of its proper divisors (79408506).

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

56720310 is a wasteful number, since it uses less digits than its factorization.

56720310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890687.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 56720310 is about 7531.2887343402. The cubic root of 56720310 is about 384.2196145016.

The spelling of 56720310 in words is "fifty-six million, seven hundred twenty thousand, three hundred ten".