28157322370 has 16 divisors (see below), whose sum is σ = 51184995768. Its totient is φ = 11151414400.

The previous prime is 28157322359. The next prime is 28157322371. The reversal of 28157322370 is 7322375182.

It can be written as a sum of positive squares in 4 ways, for example, as 27182446641 + 974875729 = 164871^2 + 31223^2 .

It is not an unprimeable number, because it can be changed into a prime (28157322371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13938259 + ... + 13940278.

Almost surely, 2^28157322370 is an apocalyptic number.

28157322370 is a deficient number, since it is larger than the sum of its proper divisors (23027673398).

28157322370 is a wasteful number, since it uses less digits than its factorization.

28157322370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27878645.

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 28157322370 in words is "twenty-eight billion, one hundred fifty-seven million, three hundred twenty-two thousand, three hundred seventy".