56431908 has 144 divisors (see below), whose sum is σ = 167587056. Its totient is φ = 15851520.

The previous prime is 56431877. The next prime is 56431927. The reversal of 56431908 is 80913465.

56431908 is a `hidden beast` number, since 5 + 643 + 1 + 9 + 0 + 8 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 451584 + 55980324 = 672^2 + 7482^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 326110 + ... + 326282.

It is an arithmetic number, because the mean of its divisors is an integer number (1163799).

Almost surely, 2^56431908 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 56431908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83793528).

56431908 is an abundant number, since it is smaller than the sum of its proper divisors (111155148).

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

56431908 is a wasteful number, since it uses less digits than its factorization.

56431908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 56431908 is about 7512.1174112230. The cubic root of 56431908 is about 383.5673023256.

The spelling of 56431908 in words is "fifty-six million, four hundred thirty-one thousand, nine hundred eight".