28871466879 has 8 divisors (see below), whose sum is σ = 39434198832. Its totient is φ = 18778189760.

The previous prime is 28871466857. The next prime is 28871466889. The reversal of 28871466879 is 97866417882.

It is a happy number.

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 28871466879 - 2¹⁶ = 28871401343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28871466839) 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, 117363564 + ... + 117363809.

It is an arithmetic number, because the mean of its divisors is an integer number (4929274854).

Almost surely, 2^28871466879 is an apocalyptic number.

28871466879 is a deficient number, since it is larger than the sum of its proper divisors (10562731953).

28871466879 is a wasteful number, since it uses less digits than its factorization.

28871466879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234727417.

The product of its digits is 65028096, while the sum is 66.

The spelling of 28871466879 in words is "twenty-eight billion, eight hundred seventy-one million, four hundred sixty-six thousand, eight hundred seventy-nine".