22722317 has 4 divisors (see below), whose sum is σ = 23094876. Its totient is φ = 22349760.

The previous prime is 22722311. The next prime is 22722391. The reversal of 22722317 is 71322722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71322722 = 2 ⋅35661361.

It can be written as a sum of positive squares in 2 ways, for example, as 264196 + 22458121 = 514^2 + 4739^2 .

It is a cyclic number.

It is not a de Polignac number, because 22722317 - 2⁶ = 22722253 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 (22722311) 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, 186188 + ... + 186309.

It is an arithmetic number, because the mean of its divisors is an integer number (5773719).

Almost surely, 2^22722317 is an apocalyptic number.

It is an amenable number.

22722317 is a deficient number, since it is larger than the sum of its proper divisors (372559).

22722317 is an equidigital number, since it uses as much as digits as its factorization.

22722317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372558.

The product of its digits is 2352, while the sum is 26.

The square root of 22722317 is about 4766.7931568299. The cubic root of 22722317 is about 283.2375776381.

The spelling of 22722317 in words is "twenty-two million, seven hundred twenty-two thousand, three hundred seventeen".