28078751484 has 72 divisors (see below), whose sum is σ = 81224951808. Its totient is φ = 8011764000.

The previous prime is 28078751453. The next prime is 28078751527. The reversal of 28078751484 is 48415787082.

28078751484 is a `hidden beast` number, since 2 + 80 + 7 + 87 + 5 + 1 + 484 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28078751484.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115069 + ... + 263435.

Almost surely, 2^28078751484 is an apocalyptic number.

It is an amenable number.

28078751484 is an abundant number, since it is smaller than the sum of its proper divisors (53146200324).

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

28078751484 is a wasteful number, since it uses less digits than its factorization.

28078751484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149135 (or 149130 counting only the distinct ones).

The product of its (nonzero) digits is 4014080, while the sum is 54.

The spelling of 28078751484 in words is "twenty-eight billion, seventy-eight million, seven hundred fifty-one thousand, four hundred eighty-four".