28879847243 has 16 divisors (see below), whose sum is σ = 31403655360. Its totient is φ = 26399488896.

The previous prime is 28879847233. The next prime is 28879847257. The reversal of 28879847243 is 34274897882.

It is a cyclic number.

It is not a de Polignac number, because 28879847243 - 2³² = 24584879947 is a prime.

It is a super-3 number, since 3×28879847243³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28879847233) 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, 3335546 + ... + 3344192.

It is an arithmetic number, because the mean of its divisors is an integer number (1962728460).

Almost surely, 2^28879847243 is an apocalyptic number.

28879847243 is a deficient number, since it is larger than the sum of its proper divisors (2523808117).

28879847243 is a wasteful number, since it uses less digits than its factorization.

28879847243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11126.

The product of its digits is 43352064, while the sum is 62.

The spelling of 28879847243 in words is "twenty-eight billion, eight hundred seventy-nine million, eight hundred forty-seven thousand, two hundred forty-three".