28425432688 has 10 divisors (see below), whose sum is σ = 55074275864. Its totient is φ = 14212716336.

The previous prime is 28425432677. The next prime is 28425432691. The reversal of 28425432688 is 88623452482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 888294756 + ... + 888294787.

Almost surely, 2^28425432688 is an apocalyptic number.

It is an amenable number.

28425432688 is a deficient number, since it is larger than the sum of its proper divisors (26648843176).

28425432688 is a wasteful number, since it uses less digits than its factorization.

28425432688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776589551 (or 1776589545 counting only the distinct ones).

The product of its digits is 5898240, while the sum is 52.

The spelling of 28425432688 in words is "twenty-eight billion, four hundred twenty-five million, four hundred thirty-two thousand, six hundred eighty-eight".