28167286994 has 32 divisors (see below), whose sum is σ = 53219569536. Its totient is φ = 10861125120.

The previous prime is 28167286981. The next prime is 28167287009. The reversal of 28167286994 is 49968276182.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 927869 + ... + 957744.

It is an arithmetic number, because the mean of its divisors is an integer number (1663111548).

Almost surely, 2^28167286994 is an apocalyptic number.

28167286994 is a deficient number, since it is larger than the sum of its proper divisors (25052282542).

28167286994 is a wasteful number, since it uses less digits than its factorization.

28167286994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885730.

The product of its digits is 20901888, while the sum is 62.

The spelling of 28167286994 in words is "twenty-eight billion, one hundred sixty-seven million, two hundred eighty-six thousand, nine hundred ninety-four".