28157861674 has 16 divisors (see below), whose sum is σ = 43461008640. Its totient is φ = 13673939040.

The previous prime is 28157861657. The next prime is 28157861701. The reversal of 28157861674 is 47616875182.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 751644 + ... + 788215.

It is an arithmetic number, because the mean of its divisors is an integer number (2716313040).

Almost surely, 2^28157861674 is an apocalyptic number.

28157861674 is a deficient number, since it is larger than the sum of its proper divisors (15303146966).

28157861674 is a wasteful number, since it uses less digits than its factorization.

28157861674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540125.

The product of its digits is 4515840, while the sum is 55.

The spelling of 28157861674 in words is "twenty-eight billion, one hundred fifty-seven million, eight hundred sixty-one thousand, six hundred seventy-four".