21826964828 has 6 divisors (see below), whose sum is σ = 38197188456. Its totient is φ = 10913482412.

The previous prime is 21826964791. The next prime is 21826964857. The reversal of 21826964828 is 82846962812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2728370600 + ... + 2728370607.

It is an arithmetic number, because the mean of its divisors is an integer number (6366198076).

Almost surely, 2^21826964828 is an apocalyptic number.

It is an amenable number.

21826964828 is a deficient number, since it is larger than the sum of its proper divisors (16370223628).

21826964828 is a wasteful number, since it uses less digits than its factorization.

21826964828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5456741211 (or 5456741209 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 56.

The spelling of 21826964828 in words is "twenty-one billion, eight hundred twenty-six million, nine hundred sixty-four thousand, eight hundred twenty-eight".