2157572724 has 48 divisors (see below), whose sum is σ = 5097176448. Its totient is φ = 710252928.

The previous prime is 2157572701. The next prime is 2157572737. The reversal of 2157572724 is 4272757512.

It is a happy number.

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, 488494 + ... + 492890.

It is an arithmetic number, because the mean of its divisors is an integer number (106191176).

Almost surely, 2^2157572724 is an apocalyptic number.

It is an amenable number.

2157572724 is an abundant number, since it is smaller than the sum of its proper divisors (2939603724).

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

2157572724 is a wasteful number, since it uses less digits than its factorization.

2157572724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4904 (or 4902 counting only the distinct ones).

The product of its digits is 274400, while the sum is 42.

The square root of 2157572724 is about 46449.6794822096. The cubic root of 2157572724 is about 1292.1764281238.

The spelling of 2157572724 in words is "two billion, one hundred fifty-seven million, five hundred seventy-two thousand, seven hundred twenty-four".