28578872333 has 4 divisors (see below), whose sum is σ = 31176951648. Its totient is φ = 25980793020.

The previous prime is 28578872327. The next prime is 28578872369. The reversal of 28578872333 is 33327887582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28578872333 - 2²² = 28574678029 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 (28578872383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1299039641 + ... + 1299039662.

It is an arithmetic number, because the mean of its divisors is an integer number (7794237912).

Almost surely, 2^28578872333 is an apocalyptic number.

It is an amenable number.

28578872333 is a deficient number, since it is larger than the sum of its proper divisors (2598079315).

28578872333 is a wasteful number, since it uses less digits than its factorization.

28578872333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2598079314.

The product of its digits is 13547520, while the sum is 56.

The spelling of 28578872333 in words is "twenty-eight billion, five hundred seventy-eight million, eight hundred seventy-two thousand, three hundred thirty-three".