28911347879 has 8 divisors (see below), whose sum is σ = 29046480528. Its totient is φ = 28776444480.

The previous prime is 28911347833. The next prime is 28911347887. The reversal of 28911347879 is 97874311982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28911347879 - 2²⁰ = 28910299303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28911347809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198149 + ... + 311585.

It is an arithmetic number, because the mean of its divisors is an integer number (3630810066).

Almost surely, 2^28911347879 is an apocalyptic number.

28911347879 is a deficient number, since it is larger than the sum of its proper divisors (135132649).

28911347879 is a wasteful number, since it uses less digits than its factorization.

28911347879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114625.

The product of its digits is 6096384, while the sum is 59.

The spelling of 28911347879 in words is "twenty-eight billion, nine hundred eleven million, three hundred forty-seven thousand, eight hundred seventy-nine".