22232250 has 96 divisors (see below), whose sum is σ = 61837776. Its totient is φ = 5760000.

The previous prime is 22232233. The next prime is 22232257. The reversal of 22232250 is 5223222.

It can be written as a sum of positive squares in 8 ways, for example, as 19881 + 22212369 = 141^2 + 4713^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22232257) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 92130 + ... + 92370.

Almost surely, 2^22232250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22232250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30918888).

22232250 is an abundant number, since it is smaller than the sum of its proper divisors (39605526).

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

22232250 is a wasteful number, since it uses less digits than its factorization.

22232250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 22232250 is about 4715.1086943993. The cubic root of 22232250 is about 281.1865041846.

Adding to 22232250 its reverse (5223222), we get a palindrome (27455472).

Subtracting from 22232250 its reverse (5223222), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 22232250 in words is "twenty-two million, two hundred thirty-two thousand, two hundred fifty".