28726447934 has 16 divisors (see below), whose sum is σ = 43312228848. Its totient is φ = 14289180672.

The previous prime is 28726447877. The next prime is 28726447949. The reversal of 28726447934 is 43974462782.

It is a self number, because there is not a number n which added to its sum of digits gives 28726447934.

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, 374597 + ... + 444719.

It is an arithmetic number, because the mean of its divisors is an integer number (2707014303).

Almost surely, 2^28726447934 is an apocalyptic number.

28726447934 is a deficient number, since it is larger than the sum of its proper divisors (14585780914).

28726447934 is a wasteful number, since it uses less digits than its factorization.

28726447934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71179.

The product of its digits is 16257024, while the sum is 56.

The spelling of 28726447934 in words is "twenty-eight billion, seven hundred twenty-six million, four hundred forty-seven thousand, nine hundred thirty-four".