28765992692 has 12 divisors (see below), whose sum is σ = 50346373476. Its totient is φ = 14381314560.

The previous prime is 28765992677. The next prime is 28765992721. The reversal of 28765992692 is 29629956782.

It can be written as a sum of positive squares in 2 ways, for example, as 13696957156 + 15069035536 = 117034^2 + 122756^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381563 + ... + 450690.

It is an arithmetic number, because the mean of its divisors is an integer number (4195531123).

Almost surely, 2^28765992692 is an apocalyptic number.

It is an amenable number.

28765992692 is a deficient number, since it is larger than the sum of its proper divisors (21580380784).

28765992692 is a wasteful number, since it uses less digits than its factorization.

28765992692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840898 (or 840896 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 65.

The spelling of 28765992692 in words is "twenty-eight billion, seven hundred sixty-five million, nine hundred ninety-two thousand, six hundred ninety-two".