57440264 has 32 divisors (see below), whose sum is σ = 124001280. Its totient is φ = 24434304.

The previous prime is 57440237. The next prime is 57440267. The reversal of 57440264 is 46204475.

It is a self number, because there is not a number n which added to its sum of digits gives 57440264.

It is not an unprimeable number, because it can be changed into a prime (57440267) 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 7 ways as a sum of consecutive naturals, for example, 3929 + ... + 11415.

It is an arithmetic number, because the mean of its divisors is an integer number (3875040).

Almost surely, 2^57440264 is an apocalyptic number.

It is an amenable number.

57440264 is an abundant number, since it is smaller than the sum of its proper divisors (66561016).

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

57440264 is a wasteful number, since it uses less digits than its factorization.

57440264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7637 (or 7633 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 57440264 is about 7578.9355453124. The cubic root of 57440264 is about 385.8384246843.

The spelling of 57440264 in words is "fifty-seven million, four hundred forty thousand, two hundred sixty-four".