28603431772 has 12 divisors (see below), whose sum is σ = 50057458360. Its totient is φ = 14301300816.

The previous prime is 28603431761. The next prime is 28603431817. The reversal of 28603431772 is 27713430682.

It is a congruent number.

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, 92554 + ... + 256462.

Almost surely, 2^28603431772 is an apocalyptic number.

It is an amenable number.

28603431772 is a deficient number, since it is larger than the sum of its proper divisors (21454026588).

28603431772 is a wasteful number, since it uses less digits than its factorization.

28603431772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207540 (or 207538 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 43.

The spelling of 28603431772 in words is "twenty-eight billion, six hundred three million, four hundred thirty-one thousand, seven hundred seventy-two".