22422290 has 32 divisors (see below), whose sum is σ = 44976384. Its totient is φ = 7978240.

The previous prime is 22422247. The next prime is 22422293. The reversal of 22422290 is 9222422.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22422293) 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, 3002 + ... + 7338.

It is an arithmetic number, because the mean of its divisors is an integer number (1405512).

Almost surely, 2^22422290 is an apocalyptic number.

22422290 is an abundant number, since it is smaller than the sum of its proper divisors (22554094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22422290 is a wasteful number, since it uses less digits than its factorization.

22422290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4402.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 22422290 is about 4735.2180520014. The cubic root of 22422290 is about 281.9854208381.

The spelling of 22422290 in words is "twenty-two million, four hundred twenty-two thousand, two hundred ninety".