22306438868 has 24 divisors (see below), whose sum is σ = 44649424512. Its totient is φ = 9552070944.

The previous prime is 22306438859. The next prime is 22306438907. The reversal of 22306438868 is 86883460322.

It is a super-2 number, since 2×22306438868² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 291455 + ... + 359942.

It is an arithmetic number, because the mean of its divisors is an integer number (1860392688).

Almost surely, 2^22306438868 is an apocalyptic number.

22306438868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22306438868 is an abundant number, since it is smaller than the sum of its proper divisors (22342985644).

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

22306438868 is a wasteful number, since it uses less digits than its factorization.

22306438868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652631 (or 652629 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 50.

The spelling of 22306438868 in words is "twenty-two billion, three hundred six million, four hundred thirty-eight thousand, eight hundred sixty-eight".