2157880232 has 16 divisors (see below), whose sum is σ = 4049154900. Its totient is φ = 1078105600.

The previous prime is 2157880211. The next prime is 2157880237. The reversal of 2157880232 is 2320887512.

It can be written as a sum of positive squares in 2 ways, for example, as 2135733796 + 22146436 = 46214^2 + 4706^2 .

It is not an unprimeable number, because it can be changed into a prime (2157880237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93257 + ... + 114072.

Almost surely, 2^2157880232 is an apocalyptic number.

It is an amenable number.

2157880232 is a deficient number, since it is larger than the sum of its proper divisors (1891274668).

2157880232 is a wasteful number, since it uses less digits than its factorization.

2157880232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208636 (or 208632 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 2157880232 is about 46452.9894839934. The cubic root of 2157880232 is about 1292.2378143455.

The spelling of 2157880232 in words is "two billion, one hundred fifty-seven million, eight hundred eighty thousand, two hundred thirty-two".