28879125013 has 16 divisors (see below), whose sum is σ = 31286609280. Its totient is φ = 26574520896.

The previous prime is 28879125007. The next prime is 28879125029. The reversal of 28879125013 is 31052197882.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-28879125013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28879425013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106606 + ... + 262912.

It is an arithmetic number, because the mean of its divisors is an integer number (1955413080).

Almost surely, 2^28879125013 is an apocalyptic number.

28879125013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28879125013 is a deficient number, since it is larger than the sum of its proper divisors (2407484267).

28879125013 is a wasteful number, since it uses less digits than its factorization.

28879125013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156636.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 28879125013 in words is "twenty-eight billion, eight hundred seventy-nine million, one hundred twenty-five thousand, thirteen".