22289748 has 72 divisors (see below), whose sum is σ = 58413600. Its totient is φ = 6604416.

The previous prime is 22289731. The next prime is 22289749. The reversal of 22289748 is 84798222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22289749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58623 + ... + 59001.

It is an arithmetic number, because the mean of its divisors is an integer number (811300).

Almost surely, 2^22289748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22289748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29206800).

22289748 is an abundant number, since it is smaller than the sum of its proper divisors (36123852).

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

22289748 is a wasteful number, since it uses less digits than its factorization.

22289748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 426 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 22289748 is about 4721.2019656016. The cubic root of 22289748 is about 281.4287010499.

The spelling of 22289748 in words is "twenty-two million, two hundred eighty-nine thousand, seven hundred forty-eight".