28217924896 has 24 divisors (see below), whose sum is σ = 63490331520. Its totient is φ = 12093396288.

The previous prime is 28217924869. The next prime is 28217924909. The reversal of 28217924896 is 69842971282.

It is a happy number.

It is a super-2 number, since 2×28217924896² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28217924896.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62986216 + ... + 62986663.

It is an arithmetic number, because the mean of its divisors is an integer number (2645430480).

Almost surely, 2^28217924896 is an apocalyptic number.

It is an amenable number.

28217924896 is an abundant number, since it is smaller than the sum of its proper divisors (35272406624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28217924896 is a wasteful number, since it uses less digits than its factorization.

28217924896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125972896 (or 125972888 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 58.

The spelling of 28217924896 in words is "twenty-eight billion, two hundred seventeen million, nine hundred twenty-four thousand, eight hundred ninety-six".