57444372 has 36 divisors (see below), whose sum is σ = 152850880. Its totient is φ = 18140112.

The previous prime is 57444349. The next prime is 57444379. The reversal of 57444372 is 27344475.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57444379) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41308 + ... + 42675.

Almost surely, 2^57444372 is an apocalyptic number.

It is an amenable number.

57444372 is an abundant number, since it is smaller than the sum of its proper divisors (95406508).

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

57444372 is a wasteful number, since it uses less digits than its factorization.

57444372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84012 (or 84007 counting only the distinct ones).

The product of its digits is 94080, while the sum is 36.

The square root of 57444372 is about 7579.2065547787. The cubic root of 57444372 is about 385.8476225672.

The spelling of 57444372 in words is "fifty-seven million, four hundred forty-four thousand, three hundred seventy-two".