52157928 has 64 divisors (see below), whose sum is σ = 138384000. Its totient is φ = 16346880.

The previous prime is 52157923. The next prime is 52157929. The reversal of 52157928 is 82975125.

It is not an unprimeable number, because it can be changed into a prime (52157923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32898 + ... + 34446.

It is an arithmetic number, because the mean of its divisors is an integer number (2162250).

Almost surely, 2^52157928 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 52157928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69192000).

52157928 is an abundant number, since it is smaller than the sum of its proper divisors (86226072).

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

52157928 is a wasteful number, since it uses less digits than its factorization.

52157928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642 (or 1638 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The square root of 52157928 is about 7222.0445858496. The cubic root of 52157928 is about 373.6285979084.

The spelling of 52157928 in words is "fifty-two million, one hundred fifty-seven thousand, nine hundred twenty-eight".