22509450 has 36 divisors (see below), whose sum is σ = 60476598. Its totient is φ = 6002400.

The previous prime is 22509449. The next prime is 22509457. The reversal of 22509450 is 5490522.

It can be written as a sum of positive squares in 3 ways, for example, as 18481401 + 4028049 = 4299^2 + 2007^2 .

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (22509457) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24561 + ... + 25460.

Almost surely, 2^22509450 is an apocalyptic number.

22509450 is an abundant number, since it is smaller than the sum of its proper divisors (37967148).

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

22509450 is a wasteful number, since it uses less digits than its factorization.

22509450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50039 (or 50031 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 22509450 is about 4744.4125031451. The cubic root of 22509450 is about 282.3503266455.

Adding to 22509450 its reverse (5490522), we get a palindrome (27999972).

The spelling of 22509450 in words is "twenty-two million, five hundred nine thousand, four hundred fifty".