22406365 has 4 divisors (see below), whose sum is σ = 26887644. Its totient is φ = 17925088.

The previous prime is 22406359. The next prime is 22406369. The reversal of 22406365 is 56360422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6874884 + 15531481 = 2622^2 + 3941^2 .

It is a cyclic number.

It is not a de Polignac number, because 22406365 - 2¹⁵ = 22373597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22406369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2240632 + ... + 2240641.

It is an arithmetic number, because the mean of its divisors is an integer number (6721911).

Almost surely, 2^22406365 is an apocalyptic number.

It is an amenable number.

22406365 is a deficient number, since it is larger than the sum of its proper divisors (4481279).

22406365 is an equidigital number, since it uses as much as digits as its factorization.

22406365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4481278.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 22406365 is about 4733.5362045726. The cubic root of 22406365 is about 281.9186467876.

Adding to 22406365 its reverse (56360422), we get a palindrome (78766787).

The spelling of 22406365 in words is "twenty-two million, four hundred six thousand, three hundred sixty-five".