57047424 has 128 divisors (see below), whose sum is σ = 182457600. Its totient is φ = 15427584.

The previous prime is 57047411. The next prime is 57047447. The reversal of 57047424 is 42474075.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50514 + ... + 51630.

It is an arithmetic number, because the mean of its divisors is an integer number (1425450).

Almost surely, 2^57047424 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 57047424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91228800).

57047424 is an abundant number, since it is smaller than the sum of its proper divisors (125410176).

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

57047424 is a wasteful number, since it uses less digits than its factorization.

57047424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160 (or 1148 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 33.

The square root of 57047424 is about 7552.9745133954. The cubic root of 57047424 is about 384.9568153058.

The spelling of 57047424 in words is "fifty-seven million, forty-seven thousand, four hundred twenty-four".