22289910 has 64 divisors (see below), whose sum is σ = 56339712. Its totient is φ = 5636736.

The previous prime is 22289909. The next prime is 22289923. The reversal of 22289910 is 1998222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47497 + ... + 47963.

It is an arithmetic number, because the mean of its divisors is an integer number (880308).

Almost surely, 2^22289910 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22289910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28169856).

22289910 is an abundant number, since it is smaller than the sum of its proper divisors (34049802).

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

22289910 is a wasteful number, since it uses less digits than its factorization.

22289910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 22289910 is about 4721.2191222183. The cubic root of 22289910 is about 281.4293828482.

The spelling of 22289910 in words is "twenty-two million, two hundred eighty-nine thousand, nine hundred ten".