28044026808 has 64 divisors (see below), whose sum is σ = 80141468160. Its totient is φ = 8011011456.

The previous prime is 28044026807. The next prime is 28044026819. The reversal of 28044026808 is 80862044082.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 28044026808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28044026807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1052466 + ... + 1078782.

It is an arithmetic number, because the mean of its divisors is an integer number (1252210440).

Almost surely, 2^28044026808 is an apocalyptic number.

28044026808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28044026808 is an abundant number, since it is smaller than the sum of its proper divisors (52097441352).

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

28044026808 is a wasteful number, since it uses less digits than its factorization.

28044026808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32676 (or 32672 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 42.

The spelling of 28044026808 in words is "twenty-eight billion, forty-four million, twenty-six thousand, eight hundred eight".