28192821092 has 24 divisors (see below), whose sum is σ = 49530297600. Its totient is φ = 14041399680.

The previous prime is 28192821073. The next prime is 28192821109. The reversal of 28192821092 is 29012829182.

It is a super-2 number, since 2×28192821092² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1282409 + ... + 1304207.

It is an arithmetic number, because the mean of its divisors is an integer number (2063762400).

Almost surely, 2^28192821092 is an apocalyptic number.

It is an amenable number.

28192821092 is a deficient number, since it is larger than the sum of its proper divisors (21337476508).

28192821092 is a wasteful number, since it uses less digits than its factorization.

28192821092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23051 (or 23049 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 44.

The spelling of 28192821092 in words is "twenty-eight billion, one hundred ninety-two million, eight hundred twenty-one thousand, ninety-two".