22448790 has 96 divisors (see below), whose sum is σ = 71862336. Its totient is φ = 4734720.

The previous prime is 22448773. The next prime is 22448791. The reversal of 22448790 is 9784422.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22448791) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6820 + ... + 9560.

It is an arithmetic number, because the mean of its divisors is an integer number (748566).

Almost surely, 2^22448790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22448790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35931168).

22448790 is an abundant number, since it is smaller than the sum of its proper divisors (49413546).

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

22448790 is a wasteful number, since it uses less digits than its factorization.

22448790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774 (or 2771 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 22448790 is about 4738.0154073198. The cubic root of 22448790 is about 282.0964661673.

The spelling of 22448790 in words is "twenty-two million, four hundred forty-eight thousand, seven hundred ninety".