22489650 has 84 divisors (see below), whose sum is σ = 62819082. Its totient is φ = 5987520.

The previous prime is 22489639. The next prime is 22489651. The reversal of 22489650 is 5698422.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 9979281 + 12510369 = 3159^2 + 3537^2 .

It is not an unprimeable number, because it can be changed into a prime (22489651) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 36142 + ... + 36758.

Almost surely, 2^22489650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22489650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31409541).

22489650 is an abundant number, since it is smaller than the sum of its proper divisors (40329432).

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

22489650 is an equidigital number, since it uses as much as digits as its factorization.

22489650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 22489650 is about 4742.3253789676. The cubic root of 22489650 is about 282.2675143678.

The spelling of 22489650 in words is "twenty-two million, four hundred eighty-nine thousand, six hundred fifty".