22722609 has 16 divisors (see below), whose sum is σ = 37288832. Its totient is φ = 11985408.

The previous prime is 22722599. The next prime is 22722629. The reversal of 22722609 is 90622722.

It is not a de Polignac number, because 22722609 - 2⁵ = 22722577 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22722629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41344 + ... + 41889.

It is an arithmetic number, because the mean of its divisors is an integer number (2330552).

Almost surely, 2^22722609 is an apocalyptic number.

It is an amenable number.

22722609 is a deficient number, since it is larger than the sum of its proper divisors (14566223).

22722609 is a wasteful number, since it uses less digits than its factorization.

22722609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83256.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 22722609 is about 4766.8237852893. The cubic root of 22722609 is about 283.2387909096.

It can be divided in two parts, 2 and 2722609, that added together give a triangular number (2722611 = T₂₃₃₃).

The spelling of 22722609 in words is "twenty-two million, seven hundred twenty-two thousand, six hundred nine".