28060638738 has 16 divisors (see below), whose sum is σ = 61223211936. Its totient is φ = 8503223840.

The previous prime is 28060638721. The next prime is 28060638751. The reversal of 28060638738 is 83783606082.

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, 212580531 + ... + 212580662.

It is an arithmetic number, because the mean of its divisors is an integer number (3826450746).

Almost surely, 2^28060638738 is an apocalyptic number.

28060638738 is an abundant number, since it is smaller than the sum of its proper divisors (33162573198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28060638738 is a wasteful number, since it uses less digits than its factorization.

28060638738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425161209.

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 28060638738 in words is "twenty-eight billion, sixty million, six hundred thirty-eight thousand, seven hundred thirty-eight".