22681206 has 12 divisors (see below), whose sum is σ = 49142652. Its totient is φ = 7560396.

The previous prime is 22681189. The next prime is 22681207. The reversal of 22681206 is 60218622.

It is a super-2 number, since 2×22681206² = 1028874211228872, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 22681206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22681207) 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, 630016 + ... + 630051.

It is an arithmetic number, because the mean of its divisors is an integer number (4095221).

Almost surely, 2^22681206 is an apocalyptic number.

22681206 is an abundant number, since it is smaller than the sum of its proper divisors (26461446).

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

22681206 is a wasteful number, since it uses less digits than its factorization.

22681206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260075 (or 1260072 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 22681206 is about 4762.4789763315. The cubic root of 22681206 is about 283.0666559602.

Adding to 22681206 its reverse (60218622), we get a palindrome (82899828).

The spelling of 22681206 in words is "twenty-two million, six hundred eighty-one thousand, two hundred six".