56431232 has 64 divisors (see below), whose sum is σ = 132118560. Its totient is φ = 23669760.

The previous prime is 56431223. The next prime is 56431237. The reversal of 56431232 is 23213465.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (56431237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16763 + ... + 19845.

Almost surely, 2^56431232 is an apocalyptic number.

56431232 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56431232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66059280).

56431232 is an abundant number, since it is smaller than the sum of its proper divisors (75687328).

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

56431232 is a wasteful number, since it uses less digits than its factorization.

56431232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121 (or 3109 counting only the distinct ones).

The product of its digits is 4320, while the sum is 26.

The square root of 56431232 is about 7512.0724171163. The cubic root of 56431232 is about 383.5657707304.

Adding to 56431232 its reverse (23213465), we get a palindrome (79644697).

The spelling of 56431232 in words is "fifty-six million, four hundred thirty-one thousand, two hundred thirty-two".