28892031772 has 24 divisors (see below), whose sum is σ = 50871221856. Its totient is φ = 14357456448.

The previous prime is 28892031737. The next prime is 28892031787. The reversal of 28892031772 is 27713029882.

It is a happy number.

It is a congruent number.

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, 2656698 + ... + 2667550.

It is an arithmetic number, because the mean of its divisors is an integer number (2119634244).

Almost surely, 2^28892031772 is an apocalyptic number.

It is an amenable number.

28892031772 is a deficient number, since it is larger than the sum of its proper divisors (21979190084).

28892031772 is a wasteful number, since it uses less digits than its factorization.

28892031772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14877 (or 14875 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 28892031772 in words is "twenty-eight billion, eight hundred ninety-two million, thirty-one thousand, seven hundred seventy-two".