28086012280 has 32 divisors (see below), whose sum is σ = 64385863200. Its totient is φ = 11022434176.

The previous prime is 28086012259. The next prime is 28086012299. The reversal of 28086012280 is 8221068082.

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, 6621940 + ... + 6626179.

It is an arithmetic number, because the mean of its divisors is an integer number (2012058225).

Almost surely, 2^28086012280 is an apocalyptic number.

28086012280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28086012280 is an abundant number, since it is smaller than the sum of its proper divisors (36299850920).

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

28086012280 is a wasteful number, since it uses less digits than its factorization.

28086012280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13248183 (or 13248179 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The spelling of 28086012280 in words is "twenty-eight billion, eighty-six million, twelve thousand, two hundred eighty".