22909000 has 64 divisors (see below), whose sum is σ = 55411200. Its totient is φ = 8856000.

The previous prime is 22908983. The next prime is 22909001. The reversal of 22909000 is 90922.

It is not an unprimeable number, because it can be changed into a prime (22909001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30631 + ... + 31369.

It is an arithmetic number, because the mean of its divisors is an integer number (865800).

Almost surely, 2^22909000 is an apocalyptic number.

22909000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22909000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27705600).

22909000 is an abundant number, since it is smaller than the sum of its proper divisors (32502200).

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

22909000 is a wasteful number, since it uses less digits than its factorization.

22909000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 22909000 is about 4786.3347145807. The cubic root of 22909000 is about 284.0111415321.

Adding to 22909000 its reverse (90922), we get a palindrome (22999922).

The spelling of 22909000 in words is "twenty-two million, nine hundred nine thousand".