57187040 has 48 divisors (see below), whose sum is σ = 136343088. Its totient is φ = 22665216.

The previous prime is 57187027. The next prime is 57187051. The reversal of 57187040 is 4078175.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 57186988 and 57187006.

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, 16499 + ... + 19661.

It is an arithmetic number, because the mean of its divisors is an integer number (2840481).

Almost surely, 2^57187040 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 57187040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68171544).

57187040 is an abundant number, since it is smaller than the sum of its proper divisors (79156048).

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

57187040 is a wasteful number, since it uses less digits than its factorization.

57187040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291 (or 3283 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 57187040 is about 7562.2113168041. The cubic root of 57187040 is about 385.2706030340.

The spelling of 57187040 in words is "fifty-seven million, one hundred eighty-seven thousand, forty".