57381744 has 120 divisors (see below), whose sum is σ = 178226688. Its totient is φ = 15845760.

The previous prime is 57381743. The next prime is 57381781. The reversal of 57381744 is 44718375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57381743) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72519 + ... + 73305.

Almost surely, 2^57381744 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 57381744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89113344).

57381744 is an abundant number, since it is smaller than the sum of its proper divisors (120844944).

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

57381744 is a wasteful number, since it uses less digits than its factorization.

57381744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843 (or 830 counting only the distinct ones).

The product of its digits is 94080, while the sum is 39.

The square root of 57381744 is about 7575.0738610260. The cubic root of 57381744 is about 385.7073497479.

The spelling of 57381744 in words is "fifty-seven million, three hundred eighty-one thousand, seven hundred forty-four".