22900000 has 72 divisors (see below), whose sum is σ = 56597940. Its totient is φ = 9120000.

The previous prime is 22899983. The next prime is 22900013. The reversal of 22900000 is 922.

It can be written as a sum of positive squares in 6 ways, for example, as 204304 + 22695696 = 452^2 + 4764^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99886 + ... + 100114.

Almost surely, 2^22900000 is an apocalyptic number.

22900000 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 22900000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28298970).

22900000 is an abundant number, since it is smaller than the sum of its proper divisors (33697940).

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

22900000 is an frugal number, since it uses more digits than its factorization.

22900000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 22900000 is about 4785.3944456022. The cubic root of 22900000 is about 283.9739445778.

Adding to 22900000 its reverse (922), we get a palindrome (22900922).

The spelling of 22900000 in words is "twenty-two million, nine hundred thousand".