57532428 has 36 divisors (see below), whose sum is σ = 146878368. Its totient is φ = 18986400.

The previous prime is 57532427. The next prime is 57532429. The reversal of 57532428 is 82423575.

It is an interprime number because it is at equal distance from previous prime (57532427) and next prime (57532429).

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 57532392 and 57532401.

It is not an unprimeable number, because it can be changed into a prime (57532421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4276 + ... + 11547.

Almost surely, 2^57532428 is an apocalyptic number.

It is an amenable number.

57532428 is an abundant number, since it is smaller than the sum of its proper divisors (89345940).

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

57532428 is a wasteful number, since it uses less digits than its factorization.

57532428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15934 (or 15929 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 57532428 is about 7585.0133816626. The cubic root of 57532428 is about 386.0446761179.

The spelling of 57532428 in words is "fifty-seven million, five hundred thirty-two thousand, four hundred twenty-eight".