28811876515828 has 48 divisors (see below), whose sum is σ = 59116922573184. Its totient is φ = 12028877199360.

The previous prime is 28811876515771. The next prime is 28811876515843. The reversal of 28811876515828 is 82851567811882.

It is a Smith number, since the sum of its digits (70) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17873350 + ... + 19418557.

It is an arithmetic number, because the mean of its divisors is an integer number (1231602553608).

Almost surely, 2^{28811876515828} is an apocalyptic number.

28811876515828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28811876515828 is an abundant number, since it is smaller than the sum of its proper divisors (30305046057356).

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

28811876515828 is a wasteful number, since it uses less digits than its factorization.

28811876515828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37292632 (or 37292630 counting only the distinct ones).

The product of its digits is 137625600, while the sum is 70.

The spelling of 28811876515828 in words is "twenty-eight trillion, eight hundred eleven billion, eight hundred seventy-six million, five hundred fifteen thousand, eight hundred twenty-eight".