57489940 has 24 divisors (see below), whose sum is σ = 121185792. Its totient is φ = 22908960.

The previous prime is 57489931. The next prime is 57489941. The reversal of 57489940 is 4998475.

57489940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57489941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117 + ... + 10723.

It is an arithmetic number, because the mean of its divisors is an integer number (5049408).

Almost surely, 2^57489940 is an apocalyptic number.

It is an amenable number.

57489940 is an abundant number, since it is smaller than the sum of its proper divisors (63695852).

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

57489940 is a wasteful number, since it uses less digits than its factorization.

57489940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10887 (or 10885 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 57489940 is about 7582.2120782790. The cubic root of 57489940 is about 385.9496207080.

The spelling of 57489940 in words is "fifty-seven million, four hundred eighty-nine thousand, nine hundred forty".