57868720 has 80 divisors (see below), whose sum is σ = 165614400. Its totient is φ = 18312192.

The previous prime is 57868651. The next prime is 57868721. The reversal of 57868720 is 2786875.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (57868721) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3306 + ... + 11254.

It is an arithmetic number, because the mean of its divisors is an integer number (2070180).

Almost surely, 2^57868720 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 57868720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82807200).

57868720 is an abundant number, since it is smaller than the sum of its proper divisors (107745680).

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

57868720 is a wasteful number, since it uses less digits than its factorization.

57868720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7982 (or 7976 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 57868720 is about 7607.1492689443. The cubic root of 57868720 is about 386.7953924692.

The spelling of 57868720 in words is "fifty-seven million, eight hundred sixty-eight thousand, seven hundred twenty".