57729888 has 96 divisors (see below), whose sum is σ = 170200800. Its totient is φ = 19035648.

The previous prime is 57729871. The next prime is 57729913. The reversal of 57729888 is 88892775.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 93870 + ... + 94482.

It is an arithmetic number, because the mean of its divisors is an integer number (1772925).

Almost surely, 2^57729888 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 57729888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85100400).

57729888 is an abundant number, since it is smaller than the sum of its proper divisors (112470912).

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

57729888 is a wasteful number, since it uses less digits than its factorization.

57729888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 727 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 54.

The square root of 57729888 is about 7598.0186891057. The cubic root of 57729888 is about 386.4858263885.

The spelling of 57729888 in words is "fifty-seven million, seven hundred twenty-nine thousand, eight hundred eighty-eight".