28108552836 has 48 divisors (see below), whose sum is σ = 80722001024. Its totient is φ = 7413244416.

The previous prime is 28108552817. The next prime is 28108552859. The reversal of 28108552836 is 63825580182.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12869125 + ... + 12871308.

Almost surely, 2^28108552836 is an apocalyptic number.

28108552836 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28108552836 is an abundant number, since it is smaller than the sum of its proper divisors (52613448188).

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

28108552836 is a wasteful number, since it uses less digits than its factorization.

28108552836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25740460 (or 25740458 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 48.

The spelling of 28108552836 in words is "twenty-eight billion, one hundred eight million, five hundred fifty-two thousand, eight hundred thirty-six".