57269828 has 72 divisors (see below), whose sum is σ = 128931264. Its totient is φ = 22008000.

The previous prime is 57269827. The next prime is 57269833. The reversal of 57269828 is 82896275.

Its product of digits (483840) is a multiple of the sum of its prime divisors (384).

It is not an unprimeable number, because it can be changed into a prime (57269827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217625 + ... + 217887.

It is an arithmetic number, because the mean of its divisors is an integer number (1790712).

Almost surely, 2^57269828 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 57269828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64465632).

57269828 is an abundant number, since it is smaller than the sum of its proper divisors (71661436).

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

57269828 is a wasteful number, since it uses less digits than its factorization.

57269828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 384 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 57269828 is about 7567.6831329014. The cubic root of 57269828 is about 385.4564283744.

The spelling of 57269828 in words is "fifty-seven million, two hundred sixty-nine thousand, eight hundred twenty-eight".