56720323 has 24 divisors (see below), whose sum is σ = 66074400. Its totient is φ = 48554880.

The previous prime is 56720309. The next prime is 56720333. The reversal of 56720323 is 32302765.

It is not a de Polignac number, because 56720323 - 2⁹ = 56719811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56720291 and 56720300.

It is not an unprimeable number, because it can be changed into a prime (56720303) 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, 247573 + ... + 247801.

It is an arithmetic number, because the mean of its divisors is an integer number (2753100).

Almost surely, 2^56720323 is an apocalyptic number.

56720323 is a deficient number, since it is larger than the sum of its proper divisors (9354077).

56720323 is a wasteful number, since it uses less digits than its factorization.

56720323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 56720323 is about 7531.2895974063. The cubic root of 56720323 is about 384.2196438553.

The spelling of 56720323 in words is "fifty-six million, seven hundred twenty thousand, three hundred twenty-three".