28630135808 has 44 divisors (see below), whose sum is σ = 59078581632. Its totient is φ = 13853276160.

The previous prime is 28630135789. The next prime is 28630135817. The reversal of 28630135808 is 80853103682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419210 + ... + 482697.

Almost surely, 2^28630135808 is an apocalyptic number.

It is an amenable number.

28630135808 is an abundant number, since it is smaller than the sum of its proper divisors (30448445824).

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

28630135808 is an equidigital number, since it uses as much as digits as its factorization.

28630135808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901958 (or 901940 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 28630135808 in words is "twenty-eight billion, six hundred thirty million, one hundred thirty-five thousand, eight hundred eight".