28990081708 has 48 divisors (see below), whose sum is σ = 61423488000. Its totient is φ = 11687245056.

The previous prime is 28990081699. The next prime is 28990081727. The reversal of 28990081708 is 80718009982.

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, 936291 + ... + 966757.

It is an arithmetic number, because the mean of its divisors is an integer number (1279656000).

Almost surely, 2^28990081708 is an apocalyptic number.

28990081708 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28990081708 is an abundant number, since it is smaller than the sum of its proper divisors (32433406292).

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

28990081708 is a wasteful number, since it uses less digits than its factorization.

28990081708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32494 (or 32492 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 52.

The spelling of 28990081708 in words is "twenty-eight billion, nine hundred ninety million, eighty-one thousand, seven hundred eight".