22722090 has 16 divisors (see below), whose sum is σ = 54533088. Its totient is φ = 6059216.

The previous prime is 22722079. The next prime is 22722097. The reversal of 22722090 is 9022722.

It is a self number, because there is not a number n which added to its sum of digits gives 22722090.

It is not an unprimeable number, because it can be changed into a prime (22722097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378672 + ... + 378731.

It is an arithmetic number, because the mean of its divisors is an integer number (3408318).

Almost surely, 2^22722090 is an apocalyptic number.

22722090 is an abundant number, since it is smaller than the sum of its proper divisors (31810998).

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

22722090 is a wasteful number, since it uses less digits than its factorization.

22722090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757413.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 22722090 is about 4766.7693462134. The cubic root of 22722090 is about 283.2366344370.

The spelling of 22722090 in words is "twenty-two million, seven hundred twenty-two thousand, ninety".