28858857172886 has 16 divisors (see below), whose sum is σ = 46618251624000. Its totient is φ = 13319444618688.

The previous prime is 28858857172867. The next prime is 28858857172907. The reversal of 28858857172886 is 68827175885882.

It is a congruent number.

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, 16587290 + ... + 18244338.

It is an arithmetic number, because the mean of its divisors is an integer number (2913640726500).

Almost surely, 2^{28858857172886} is an apocalyptic number.

28858857172886 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28858857172886 is a deficient number, since it is larger than the sum of its proper divisors (17759394451114).

28858857172886 is a wasteful number, since it uses less digits than its factorization.

28858857172886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326903.

The product of its digits is 7707033600, while the sum is 83.

The spelling of 28858857172886 in words is "twenty-eight trillion, eight hundred fifty-eight billion, eight hundred fifty-seven million, one hundred seventy-two thousand, eight hundred eighty-six".