22252770 has 48 divisors (see below), whose sum is σ = 58476600. Its totient is φ = 5870592.

The previous prime is 22252757. The next prime is 22252771. The reversal of 22252770 is 7725222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21040569 + 1212201 = 4587^2 + 1101^2 .

It is not an unprimeable number, because it can be changed into a prime (22252771) 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, 7456 + ... + 10004.

Almost surely, 2^22252770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22252770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29238300).

22252770 is an abundant number, since it is smaller than the sum of its proper divisors (36223830).

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

22252770 is a wasteful number, since it uses less digits than its factorization.

22252770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659 (or 2656 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 22252770 is about 4717.2841763031. The cubic root of 22252770 is about 281.2729877507.

Adding to 22252770 its reverse (7725222), we get a palindrome (29977992).

The spelling of 22252770 in words is "twenty-two million, two hundred fifty-two thousand, seven hundred seventy".