28109713038 has 48 divisors (see below), whose sum is σ = 63465099600. Its totient is φ = 8287868160.

The previous prime is 28109713031. The next prime is 28109713063. The reversal of 28109713038 is 83031790182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28109713031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 496363 + ... + 550086.

It is an arithmetic number, because the mean of its divisors is an integer number (1322189575).

Almost surely, 2^28109713038 is an apocalyptic number.

28109713038 is an abundant number, since it is smaller than the sum of its proper divisors (35355386562).

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

28109713038 is a wasteful number, since it uses less digits than its factorization.

28109713038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046513 (or 1046502 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

It can be divided in two parts, 28109 and 713038, that added together give a palindrome (741147).

The spelling of 28109713038 in words is "twenty-eight billion, one hundred nine million, seven hundred thirteen thousand, thirty-eight".