56431432 has 32 divisors (see below), whose sum is σ = 114161400. Its totient is φ = 26051584.

The previous prime is 56431423. The next prime is 56431433. The reversal of 56431432 is 23413465.

It can be written as a sum of positive squares in 4 ways, for example, as 50211396 + 6220036 = 7086^2 + 2494^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 56431432.

It is not an unprimeable number, because it can be changed into a prime (56431433) 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, 3294 + ... + 11122.

Almost surely, 2^56431432 is an apocalyptic number.

It is an amenable number.

56431432 is an abundant number, since it is smaller than the sum of its proper divisors (57729968).

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

56431432 is a wasteful number, since it uses less digits than its factorization.

56431432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7905 (or 7901 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 56431432 is about 7512.0857290103. The cubic root of 56431432 is about 383.5662238663.

Adding to 56431432 its reverse (23413465), we get a palindrome (79844897).

The spelling of 56431432 in words is "fifty-six million, four hundred thirty-one thousand, four hundred thirty-two".