22540210 has 64 divisors (see below), whose sum is σ = 51404544. Its totient is φ = 6912000.

The previous prime is 22540169. The next prime is 22540237. The reversal of 22540210 is 1204522.

It is a super-2 number, since 2×22540210² = 1016122133688200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56010 + ... + 56410.

It is an arithmetic number, because the mean of its divisors is an integer number (803196).

Almost surely, 2^22540210 is an apocalyptic number.

22540210 is an abundant number, since it is smaller than the sum of its proper divisors (28864334).

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

22540210 is a wasteful number, since it uses less digits than its factorization.

22540210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 22540210 is about 4747.6531044296. The cubic root of 22540210 is about 282.4788821763.

Adding to 22540210 its reverse (1204522), we get a palindrome (23744732).

The spelling of 22540210 in words is "twenty-two million, five hundred forty thousand, two hundred ten".