22642250 has 48 divisors (see below), whose sum is σ = 44363592. Its totient is φ = 8648000.

The previous prime is 22642229. The next prime is 22642259. The reversal of 22642250 is 5224622.

It can be written as a sum of positive squares in 4 ways, for example, as 1857769 + 20784481 = 1363^2 + 4559^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22642259) 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, 481727 + ... + 481773.

Almost surely, 2^22642250 is an apocalyptic number.

22642250 is a deficient number, since it is larger than the sum of its proper divisors (21721342).

22642250 is an equidigital number, since it uses as much as digits as its factorization.

22642250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 22642250 is about 4758.3873318594. The cubic root of 22642250 is about 282.9045031498.

Adding to 22642250 its reverse (5224622), we get a palindrome (27866872).

The spelling of 22642250 in words is "twenty-two million, six hundred forty-two thousand, two hundred fifty".