22722361 has 6 divisors (see below), whose sum is σ = 23264970. Its totient is φ = 22192128.

The previous prime is 22722311. The next prime is 22722391. The reversal of 22722361 is 16322722.

It can be written as a sum of positive squares in only one way, i.e., 21566736 + 1155625 = 4644^2 + 1075^2 .

It is not a de Polignac number, because 22722361 - 2⁹ = 22721849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22722311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4296 + ... + 7993.

It is an arithmetic number, because the mean of its divisors is an integer number (3877495).

Almost surely, 2^22722361 is an apocalyptic number.

It is an amenable number.

22722361 is a deficient number, since it is larger than the sum of its proper divisors (542609).

22722361 is an equidigital number, since it uses as much as digits as its factorization.

22722361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12375 (or 12332 counting only the distinct ones).

The product of its digits is 2016, while the sum is 25.

The square root of 22722361 is about 4766.7977720898. The cubic root of 22722361 is about 283.2377604605.

The spelling of 22722361 in words is "twenty-two million, seven hundred twenty-two thousand, three hundred sixty-one".