22540450 has 12 divisors (see below), whose sum is σ = 41925330. Its totient is φ = 9016160.

The previous prime is 22540421. The next prime is 22540451. The reversal of 22540450 is 5404522.

It can be written as a sum of positive squares in 3 ways, for example, as 18292729 + 4247721 = 4277^2 + 2061^2 .

It is not an unprimeable number, because it can be changed into a prime (22540451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 225355 + ... + 225454.

Almost surely, 2^22540450 is an apocalyptic number.

22540450 is a deficient number, since it is larger than the sum of its proper divisors (19384880).

22540450 is a wasteful number, since it uses less digits than its factorization.

22540450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450821 (or 450816 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 22540450 is about 4747.6783800085. The cubic root of 22540450 is about 282.4798847504.

Adding to 22540450 its reverse (5404522), we get a palindrome (27944972).

It can be divided in two parts, 2 and 2540450, that added together give a palindrome (2540452).

The spelling of 22540450 in words is "twenty-two million, five hundred forty thousand, four hundred fifty".