28861679794 has 8 divisors (see below), whose sum is σ = 43343275500. Its totient is φ = 14413921296.

The previous prime is 28861679783. The next prime is 28861679849. The reversal of 28861679794 is 49797616882.

It can be written as a sum of positive squares in 2 ways, for example, as 28861592769 + 87025 = 169887^2 + 295^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8457169 + ... + 8460580.

Almost surely, 2^28861679794 is an apocalyptic number.

28861679794 is a deficient number, since it is larger than the sum of its proper divisors (14481595706).

28861679794 is a wasteful number, since it uses less digits than its factorization.

28861679794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16918604.

The product of its digits is 73156608, while the sum is 67.

The spelling of 28861679794 in words is "twenty-eight billion, eight hundred sixty-one million, six hundred seventy-nine thousand, seven hundred ninety-four".