28115579910 has 32 divisors (see below), whose sum is σ = 73611700992. Its totient is φ = 6815898080.

The previous prime is 28115579887. The next prime is 28115579951. The reversal of 28115579910 is 1997551182.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28115579910.

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, 42599034 + ... + 42599693.

It is an arithmetic number, because the mean of its divisors is an integer number (2300365656).

Almost surely, 2^28115579910 is an apocalyptic number.

28115579910 is an abundant number, since it is smaller than the sum of its proper divisors (45496121082).

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

28115579910 is a wasteful number, since it uses less digits than its factorization.

28115579910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85198748.

The product of its (nonzero) digits is 226800, while the sum is 48.

The spelling of 28115579910 in words is "twenty-eight billion, one hundred fifteen million, five hundred seventy-nine thousand, nine hundred ten".