22722289 has 4 divisors (see below), whose sum is σ = 22735600. Its totient is φ = 22708980.

The previous prime is 22722263. The next prime is 22722299. The reversal of 22722289 is 98222722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22722289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22722299) 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, 3639 + ... + 7660.

It is an arithmetic number, because the mean of its divisors is an integer number (5683900).

Almost surely, 2^22722289 is an apocalyptic number.

It is an amenable number.

22722289 is a deficient number, since it is larger than the sum of its proper divisors (13311).

22722289 is a wasteful number, since it uses less digits than its factorization.

22722289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13310.

The product of its digits is 16128, while the sum is 34.

The square root of 22722289 is about 4766.7902198440. The cubic root of 22722289 is about 283.2374612964.

The spelling of 22722289 in words is "twenty-two million, seven hundred twenty-two thousand, two hundred eighty-nine".