57232784 has 60 divisors (see below), whose sum is σ = 132546204. Its totient is φ = 23853312.

The previous prime is 57232781. The next prime is 57232801. The reversal of 57232784 is 48723275.

It can be written as a sum of positive squares in 2 ways, for example, as 32947600 + 24285184 = 5740^2 + 4928^2 .

It is not an unprimeable number, because it can be changed into a prime (57232781) 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, 28022 + ... + 29994.

Almost surely, 2^57232784 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 57232784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66273102).

57232784 is an abundant number, since it is smaller than the sum of its proper divisors (75313420).

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

57232784 is a wasteful number, since it uses less digits than its factorization.

57232784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032 (or 2019 counting only the distinct ones).

The product of its digits is 94080, while the sum is 38.

The square root of 57232784 is about 7565.2352243668. The cubic root of 57232784 is about 385.3733018357.

The spelling of 57232784 in words is "fifty-seven million, two hundred thirty-two thousand, seven hundred eighty-four".