22232500 has 30 divisors (see below), whose sum is σ = 48623498. Its totient is φ = 8892000.

The previous prime is 22232471. The next prime is 22232501. The reversal of 22232500 is 523222.

It can be written as a sum of positive squares in 5 ways, for example, as 13220496 + 9012004 = 3636^2 + 3002^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22232501) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1947 + ... + 6946.

Almost surely, 2^22232500 is an apocalyptic number.

22232500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22232500 is an abundant number, since it is smaller than the sum of its proper divisors (26390998).

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

22232500 is an equidigital number, since it uses as much as digits as its factorization.

22232500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8917 (or 8900 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 22232500 is about 4715.1352048483. The cubic root of 22232500 is about 281.1875581544.

Adding to 22232500 its reverse (523222), we get a palindrome (22755722).

The spelling of 22232500 in words is "twenty-two million, two hundred thirty-two thousand, five hundred".