2157322304 has 28 divisors (see below), whose sum is σ = 4532758524. Its totient is φ = 1015209984.

The previous prime is 2157322303. The next prime is 2157322313. The reversal of 2157322304 is 4032237512.

It can be written as a sum of positive squares in 2 ways, for example, as 963481600 + 1193840704 = 31040^2 + 34552^2 .

It is not an unprimeable number, because it can be changed into a prime (2157322303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 990329 + ... + 992504.

It is an arithmetic number, because the mean of its divisors is an integer number (161884233).

Almost surely, 2^2157322304 is an apocalyptic number.

It is an amenable number.

2157322304 is an abundant number, since it is smaller than the sum of its proper divisors (2375436220).

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

2157322304 is a wasteful number, since it uses less digits than its factorization.

2157322304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982862 (or 1982852 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 2157322304 is about 46446.9837987355. The cubic root of 2157322304 is about 1292.1264337732.

Adding to 2157322304 its reverse (4032237512), we get a palindrome (6189559816).

The spelling of 2157322304 in words is "two billion, one hundred fifty-seven million, three hundred twenty-two thousand, three hundred four".