57431880 has 96 divisors (see below), whose sum is σ = 203636160. Its totient is φ = 13921920.

The previous prime is 57431833. The next prime is 57431893. The reversal of 57431880 is 8813475.

57431880 is a `hidden beast` number, since 574 + 3 + 1 + 8 + 80 = 666.

57431880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3292 + ... + 11211.

It is an arithmetic number, because the mean of its divisors is an integer number (2121210).

Almost surely, 2^57431880 is an apocalyptic number.

It is an amenable number.

57431880 is an abundant number, since it is smaller than the sum of its proper divisors (146204280).

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

57431880 is a wasteful number, since it uses less digits than its factorization.

57431880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14531 (or 14524 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 57431880 is about 7578.3824131539. The cubic root of 57431880 is about 385.8196514027.

It can be divided in two parts, 57431 and 880, that added together give a triangular number (58311 = T₃₄₁).

The spelling of 57431880 in words is "fifty-seven million, four hundred thirty-one thousand, eight hundred eighty".