57389240 has 16 divisors (see below), whose sum is σ = 129125880. Its totient is φ = 22955680.

The previous prime is 57389237. The next prime is 57389249. The reversal of 57389240 is 4298375.

It is a junction number, because it is equal to n+sod(n) for n = 57389194 and 57389203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57389249) 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, 717326 + ... + 717405.

Almost surely, 2^57389240 is an apocalyptic number.

It is an amenable number.

57389240 is an abundant number, since it is smaller than the sum of its proper divisors (71736640).

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

57389240 is a wasteful number, since it uses less digits than its factorization.

57389240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434742 (or 1434738 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 57389240 is about 7575.5686255224. The cubic root of 57389240 is about 385.7241444995.

The spelling of 57389240 in words is "fifty-seven million, three hundred eighty-nine thousand, two hundred forty".