28866981120 has 72 divisors (see below), whose sum is σ = 92193933216. Its totient is φ = 7697860608.

The previous prime is 28866981119. The next prime is 28866981133. The reversal of 28866981120 is 2118966882.

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, 3754882 + ... + 3762561.

Almost surely, 2^28866981120 is an apocalyptic number.

28866981120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28866981120 is an abundant number, since it is smaller than the sum of its proper divisors (63326952096).

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

28866981120 is an equidigital number, since it uses as much as digits as its factorization.

28866981120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7517467 (or 7517453 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 51.

The spelling of 28866981120 in words is "twenty-eight billion, eight hundred sixty-six million, nine hundred eighty-one thousand, one hundred twenty".