22990554 has 20 divisors (see below), whose sum is σ = 51516234. Its totient is φ = 7663464.

The previous prime is 22990553. The next prime is 22990559. The reversal of 22990554 is 45509922.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19847025 + 3143529 = 4455^2 + 1773^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22990553) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 70797 + ... + 71120.

Almost surely, 2^22990554 is an apocalyptic number.

22990554 is an abundant number, since it is smaller than the sum of its proper divisors (28525680).

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

22990554 is a wasteful number, since it uses less digits than its factorization.

22990554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141931 (or 141922 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 22990554 is about 4794.8466085997. The cubic root of 22990554 is about 284.3477605274.

The spelling of 22990554 in words is "twenty-two million, nine hundred ninety thousand, five hundred fifty-four".