22252146 has 16 divisors (see below), whose sum is σ = 50862144. Its totient is φ = 6357744.

The previous prime is 22252127. The next prime is 22252147. The reversal of 22252146 is 64125222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22252147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264865 + ... + 264948.

It is an arithmetic number, because the mean of its divisors is an integer number (3178884).

Almost surely, 2^22252146 is an apocalyptic number.

22252146 is an abundant number, since it is smaller than the sum of its proper divisors (28609998).

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

22252146 is a wasteful number, since it uses less digits than its factorization.

22252146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529825.

The product of its digits is 1920, while the sum is 24.

The square root of 22252146 is about 4717.2180360886. The cubic root of 22252146 is about 281.2703586250.

Adding to 22252146 its reverse (64125222), we get a palindrome (86377368).

It can be divided in two parts, 2225 and 2146, that added together give a triangular number (4371 = T₉₃).

The spelling of 22252146 in words is "twenty-two million, two hundred fifty-two thousand, one hundred forty-six".