28157874018 has 16 divisors (see below), whose sum is σ = 57270252960. Its totient is φ = 9226873856.

The previous prime is 28157874013. The next prime is 28157874029. The reversal of 28157874018 is 81047875182.

It is not an unprimeable number, because it can be changed into a prime (28157874013) 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, 39770655 + ... + 39771362.

It is an arithmetic number, because the mean of its divisors is an integer number (3579390810).

Almost surely, 2^28157874018 is an apocalyptic number.

28157874018 is an abundant number, since it is smaller than the sum of its proper divisors (29112378942).

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

28157874018 is a wasteful number, since it uses less digits than its factorization.

28157874018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79542081.

The product of its (nonzero) digits is 1003520, while the sum is 51.

The spelling of 28157874018 in words is "twenty-eight billion, one hundred fifty-seven million, eight hundred seventy-four thousand, eighteen".