28161468734 has 16 divisors (see below), whose sum is σ = 48487624800. Its totient is φ = 12016495584.

The previous prime is 28161468721. The next prime is 28161468767. The reversal of 28161468734 is 43786416182.

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, 4388789 + ... + 4395200.

It is an arithmetic number, because the mean of its divisors is an integer number (3030476550).

Almost surely, 2^28161468734 is an apocalyptic number.

28161468734 is a deficient number, since it is larger than the sum of its proper divisors (20326156066).

28161468734 is a wasteful number, since it uses less digits than its factorization.

28161468734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8784227.

The product of its digits is 1548288, while the sum is 50.

The spelling of 28161468734 in words is "twenty-eight billion, one hundred sixty-one million, four hundred sixty-eight thousand, seven hundred thirty-four".