56442232 has 64 divisors (see below), whose sum is σ = 134265600. Its totient is φ = 21603840.

The previous prime is 56442209. The next prime is 56442247. The reversal of 56442232 is 23224465.

It is a super-3 number, since 3×56442232³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 56442232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35568 + ... + 37120.

It is an arithmetic number, because the mean of its divisors is an integer number (2097900).

Almost surely, 2^56442232 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 56442232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67132800).

56442232 is an abundant number, since it is smaller than the sum of its proper divisors (77823368).

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

56442232 is a wasteful number, since it uses less digits than its factorization.

56442232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636 (or 1632 counting only the distinct ones).

The product of its digits is 11520, while the sum is 28.

The square root of 56442232 is about 7512.8045362567. The cubic root of 56442232 is about 383.5906916191.

Adding to 56442232 its reverse (23224465), we get a palindrome (79666697).

The spelling of 56442232 in words is "fifty-six million, four hundred forty-two thousand, two hundred thirty-two".