22909554 has 56 divisors (see below), whose sum is σ = 54300240. Its totient is φ = 7225848.

The previous prime is 22909547. The next prime is 22909559. The reversal of 22909554 is 45590922.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22909559) 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 27 ways as a sum of consecutive naturals, for example, 27289 + ... + 28115.

Almost surely, 2^22909554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22909554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27150120).

22909554 is an abundant number, since it is smaller than the sum of its proper divisors (31390686).

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

22909554 is an equidigital number, since it uses as much as digits as its factorization.

22909554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 851 counting only the distinct ones).

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

The square root of 22909554 is about 4786.3925873250. The cubic root of 22909554 is about 284.0134308930.

The spelling of 22909554 in words is "twenty-two million, nine hundred nine thousand, five hundred fifty-four".