22540206 has 24 divisors (see below), whose sum is σ = 48817080. Its totient is φ = 6935136.

The previous prime is 22540169. The next prime is 22540237. The reversal of 22540206 is 60204522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10101 + ... + 12128.

It is an arithmetic number, because the mean of its divisors is an integer number (2034045).

Almost surely, 2^22540206 is an apocalyptic number.

22540206 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22540206 is an abundant number, since it is smaller than the sum of its proper divisors (26276874).

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

22540206 is a wasteful number, since it uses less digits than its factorization.

22540206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22260 (or 22247 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 22540206 is about 4747.6526831688. The cubic root of 22540206 is about 282.4788654667.

Adding to 22540206 its reverse (60204522), we get a palindrome (82744728).

The spelling of 22540206 in words is "twenty-two million, five hundred forty thousand, two hundred six".