28093390792 has 16 divisors (see below), whose sum is σ = 52695746460. Its totient is φ = 14041191744.

The previous prime is 28093390771. The next prime is 28093390807. The reversal of 28093390792 is 29709339082.

It can be written as a sum of positive squares in 2 ways, for example, as 25349097796 + 2744292996 = 159214^2 + 52386^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666223 + ... + 707134.

Almost surely, 2^28093390792 is an apocalyptic number.

It is an amenable number.

28093390792 is a deficient number, since it is larger than the sum of its proper divisors (24602355668).

28093390792 is a wasteful number, since it uses less digits than its factorization.

28093390792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375920 (or 1375916 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 28093390792 in words is "twenty-eight billion, ninety-three million, three hundred ninety thousand, seven hundred ninety-two".