57431028 has 24 divisors (see below), whose sum is σ = 134145088. Its totient is φ = 19123776.

The previous prime is 57431009. The next prime is 57431029. The reversal of 57431028 is 82013475.

It is a junction number, because it is equal to n+sod(n) for n = 57430986 and 57431004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57431029) 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, 13800 + ... + 17472.

Almost surely, 2^57431028 is an apocalyptic number.

It is an amenable number.

57431028 is an abundant number, since it is smaller than the sum of its proper divisors (76714060).

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

57431028 is a wasteful number, since it uses less digits than its factorization.

57431028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4983 (or 4981 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 57431028 is about 7578.3262004218. The cubic root of 57431028 is about 385.8177435195.

The spelling of 57431028 in words is "fifty-seven million, four hundred thirty-one thousand, twenty-eight".