28801188864 has 132 divisors (see below), whose sum is σ = 95043421824. Its totient is φ = 8228892672.

The previous prime is 28801188859. The next prime is 28801188887. The reversal of 28801188864 is 46888110882.

It is a super-2 number, since 2×28801188864² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28801188864.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158712 + ... + 287735.

Almost surely, 2^28801188864 is an apocalyptic number.

28801188864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28801188864 is an abundant number, since it is smaller than the sum of its proper divisors (66242232960).

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

28801188864 is a wasteful number, since it uses less digits than its factorization.

28801188864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446480 (or 446459 counting only the distinct ones).

The product of its (nonzero) digits is 1572864, while the sum is 54.

The spelling of 28801188864 in words is "twenty-eight billion, eight hundred one million, one hundred eighty-eight thousand, eight hundred sixty-four".