28107570888 has 96 divisors (see below), whose sum is σ = 79035028800. Its totient is φ = 9358400448.

The previous prime is 28107570847. The next prime is 28107570899. The reversal of 28107570888 is 88807570182.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1778670 + ... + 1794402.

It is an arithmetic number, because the mean of its divisors is an integer number (823281550).

Almost surely, 2^28107570888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28107570888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39517514400).

28107570888 is an abundant number, since it is smaller than the sum of its proper divisors (50927457912).

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

28107570888 is a wasteful number, since it uses less digits than its factorization.

28107570888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16673 (or 16657 counting only the distinct ones).

The product of its (nonzero) digits is 2007040, while the sum is 54.

The spelling of 28107570888 in words is "twenty-eight billion, one hundred seven million, five hundred seventy thousand, eight hundred eighty-eight".