57488728 has 16 divisors (see below), whose sum is σ = 117590760. Its totient is φ = 26131200.

The previous prime is 57488723. The next prime is 57488773. The reversal of 57488728 is 82788475.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57488723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326553 + ... + 326728.

Almost surely, 2^57488728 is an apocalyptic number.

It is an amenable number.

57488728 is an abundant number, since it is smaller than the sum of its proper divisors (60102032).

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

57488728 is a wasteful number, since it uses less digits than its factorization.

57488728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653298 (or 653294 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 49.

The square root of 57488728 is about 7582.1321539525. The cubic root of 57488728 is about 385.9469084989.

The spelling of 57488728 in words is "fifty-seven million, four hundred eighty-eight thousand, seven hundred twenty-eight".