22090964 has 36 divisors (see below), whose sum is σ = 46084500. Its totient is φ = 9233280.

The previous prime is 22090951. The next prime is 22090979. The reversal of 22090964 is 46909022.

It can be written as a sum of positive squares in 2 ways, for example, as 1768900 + 20322064 = 1330^2 + 4508^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22090964.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6662 + ... + 9410.

It is an arithmetic number, because the mean of its divisors is an integer number (1280125).

Almost surely, 2^22090964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22090964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23042250).

22090964 is an abundant number, since it is smaller than the sum of its proper divisors (23993536).

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

22090964 is a wasteful number, since it uses less digits than its factorization.

22090964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808 (or 2799 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 22090964 is about 4700.1025520727. The cubic root of 22090964 is about 280.5895909708.

Adding to 22090964 its reverse (46909022), we get a palindrome (68999986).

The spelling of 22090964 in words is "twenty-two million, ninety thousand, nine hundred sixty-four".