22090456 has 8 divisors (see below), whose sum is σ = 41419620. Its totient is φ = 11045224.

The previous prime is 22090447. The next prime is 22090459. The reversal of 22090456 is 65409022.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22090459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1380646 + ... + 1380661.

Almost surely, 2^22090456 is an apocalyptic number.

It is an amenable number.

22090456 is a deficient number, since it is larger than the sum of its proper divisors (19329164).

22090456 is a wasteful number, since it uses less digits than its factorization.

22090456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761313 (or 2761309 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 22090456 is about 4700.0485103880. The cubic root of 22090456 is about 280.5874401577.

Adding to 22090456 its reverse (65409022), we get a palindrome (87499478).

The spelling of 22090456 in words is "twenty-two million, ninety thousand, four hundred fifty-six".