22265568 has 144 divisors (see below), whose sum is σ = 72006480. Its totient is φ = 6469632.

The previous prime is 22265567. The next prime is 22265569. The reversal of 22265568 is 86556222.

It is an interprime number because it is at equal distance from previous prime (22265567) and next prime (22265569).

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22265561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70980 + ... + 71292.

It is an arithmetic number, because the mean of its divisors is an integer number (500045).

Almost surely, 2^22265568 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 22265568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36003240).

22265568 is an abundant number, since it is smaller than the sum of its proper divisors (49740912).

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

22265568 is a wasteful number, since it uses less digits than its factorization.

22265568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 350 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 22265568 is about 4718.6404821728. The cubic root of 22265568 is about 281.3268992686.

The spelling of 22265568 in words is "twenty-two million, two hundred sixty-five thousand, five hundred sixty-eight".