23440320222 has 64 divisors (see below), whose sum is σ = 55897786368. Its totient is φ = 6469632000.

The previous prime is 23440320193. The next prime is 23440320227. The reversal of 23440320222 is 22202304432.

It is a happy number.

It is a super-2 number, since 2×23440320222² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23440320192 and 23440320201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23440320227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 302179 + ... + 371742.

It is an arithmetic number, because the mean of its divisors is an integer number (873402912).

Almost surely, 2^23440320222 is an apocalyptic number.

23440320222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23440320222 is an abundant number, since it is smaller than the sum of its proper divisors (32457466146).

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

23440320222 is a wasteful number, since it uses less digits than its factorization.

23440320222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673985.

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 23440320222 its reverse (22202304432), we get a palindrome (45642624654).

The spelling of 23440320222 in words is "twenty-three billion, four hundred forty million, three hundred twenty thousand, two hundred twenty-two".