28813908480 has 160 divisors (see below), whose sum is σ = 105273869184. Its totient is φ = 6586023936.

The previous prime is 28813908449. The next prime is 28813908493. The reversal of 28813908480 is 8480931882.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

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, 214227 + ... + 321746.

Almost surely, 2^28813908480 is an apocalyptic number.

28813908480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28813908480 is an abundant number, since it is smaller than the sum of its proper divisors (76459960704).

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

28813908480 is an equidigital number, since it uses as much as digits as its factorization.

28813908480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536006 (or 535990 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 51.

The spelling of 28813908480 in words is "twenty-eight billion, eight hundred thirteen million, nine hundred eight thousand, four hundred eighty".