56720232 has 48 divisors (see below), whose sum is σ = 154851840. Its totient is φ = 18754848.

The previous prime is 56720207. The next prime is 56720239. The reversal of 56720232 is 23202765.

It is a junction number, because it is equal to n+sod(n) for n = 56720196 and 56720205.

It is not an unprimeable number, because it can be changed into a prime (56720239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6043 + ... + 12245.

It is an arithmetic number, because the mean of its divisors is an integer number (3226080).

Almost surely, 2^56720232 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 56720232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77425920).

56720232 is an abundant number, since it is smaller than the sum of its proper divisors (98131608).

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

56720232 is a wasteful number, since it uses less digits than its factorization.

56720232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6342 (or 6335 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 56720232 is about 7531.2835559418. The cubic root of 56720232 is about 384.2194383792.

Adding to 56720232 its reverse (23202765), we get a palindrome (79922997).

The spelling of 56720232 in words is "fifty-six million, seven hundred twenty thousand, two hundred thirty-two".