28121692110 has 32 divisors (see below), whose sum is σ = 67570329600. Its totient is φ = 7490421408.

The previous prime is 28121692099. The next prime is 28121692133. The reversal of 28121692110 is 1129612182.

28121692110 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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, 517210 + ... + 568989.

It is an arithmetic number, because the mean of its divisors is an integer number (2111572800).

Almost surely, 2^28121692110 is an apocalyptic number.

28121692110 is an abundant number, since it is smaller than the sum of its proper divisors (39448637490).

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

28121692110 is a wasteful number, since it uses less digits than its factorization.

28121692110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087072.

The product of its (nonzero) digits is 3456, while the sum is 33.

The spelling of 28121692110 in words is "twenty-eight billion, one hundred twenty-one million, six hundred ninety-two thousand, one hundred ten".