22252272 has 60 divisors (see below), whose sum is σ = 66877416. Its totient is φ = 6357120.

The previous prime is 22252267. The next prime is 22252277. The reversal of 22252272 is 27225222.

It is an interprime number because it is at equal distance from previous prime (22252267) and next prime (22252277).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22252277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2379 + ... + 7082.

Almost surely, 2^22252272 is an apocalyptic number.

It is an amenable number.

22252272 is an abundant number, since it is smaller than the sum of its proper divisors (44625144).

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

22252272 is a wasteful number, since it uses less digits than its factorization.

22252272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9486 (or 9473 counting only the distinct ones).

The product of its digits is 2240, while the sum is 24.

The square root of 22252272 is about 4717.2313913990. The cubic root of 22252272 is about 281.2708895101.

Adding to 22252272 its reverse (27225222), we get a palindrome (49477494).

The spelling of 22252272 in words is "twenty-two million, two hundred fifty-two thousand, two hundred seventy-two".