57732240 has 40 divisors (see below), whose sum is σ = 178970688. Its totient is φ = 15395200.

The previous prime is 57732239. The next prime is 57732251. The reversal of 57732240 is 4223775.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 57732198 and 57732207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120036 + ... + 120515.

Almost surely, 2^57732240 is an apocalyptic number.

It is an amenable number.

57732240 is an abundant number, since it is smaller than the sum of its proper divisors (121238448).

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

57732240 is a wasteful number, since it uses less digits than its factorization.

57732240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240567 (or 240561 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 57732240 is about 7598.1734647216. The cubic root of 57732240 is about 386.4910749830.

The spelling of 57732240 in words is "fifty-seven million, seven hundred thirty-two thousand, two hundred forty".