28731574430 has 16 divisors (see below), whose sum is σ = 55695052224. Its totient is φ = 10608581280.

The previous prime is 28731574351. The next prime is 28731574441. The reversal of 28731574430 is 3447513782.

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, 110505926 + ... + 110506185.

It is an arithmetic number, because the mean of its divisors is an integer number (3480940764).

Almost surely, 2^28731574430 is an apocalyptic number.

28731574430 is a deficient number, since it is larger than the sum of its proper divisors (26963477794).

28731574430 is a wasteful number, since it uses less digits than its factorization.

28731574430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221012131.

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 28731574430 in words is "twenty-eight billion, seven hundred thirty-one million, five hundred seventy-four thousand, four hundred thirty".