57987840 has 72 divisors (see below), whose sum is σ = 185210928. Its totient is φ = 15462400.

The previous prime is 57987827. The next prime is 57987869. The reversal of 57987840 is 4878975.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 57987840.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3711 + ... + 11390.

It is an arithmetic number, because the mean of its divisors is an integer number (2572374).

Almost surely, 2^57987840 is an apocalyptic number.

It is an amenable number.

57987840 is an abundant number, since it is smaller than the sum of its proper divisors (127223088).

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

57987840 is a wasteful number, since it uses less digits than its factorization.

57987840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15125 (or 15111 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 57987840 is about 7614.9747209035. The cubic root of 57987840 is about 387.0606105284.

The spelling of 57987840 in words is "fifty-seven million, nine hundred eighty-seven thousand, eight hundred forty".