22722290 has 16 divisors (see below), whose sum is σ = 43053120. Its totient is φ = 8610480.

The previous prime is 22722263. The next prime is 22722299. The reversal of 22722290 is 9222722.

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 7 ways as a sum of consecutive naturals, for example, 59606 + ... + 59985.

It is an arithmetic number, because the mean of its divisors is an integer number (2690820).

Almost surely, 2^22722290 is an apocalyptic number.

22722290 is a deficient number, since it is larger than the sum of its proper divisors (20330830).

22722290 is a wasteful number, since it uses less digits than its factorization.

22722290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119617.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 22722290 is about 4766.7903247363. The cubic root of 22722290 is about 283.2374654515.

The spelling of 22722290 in words is "twenty-two million, seven hundred twenty-two thousand, two hundred ninety".