22206506 has 16 divisors (see below), whose sum is σ = 38846400. Its totient is φ = 9516780.

The previous prime is 22206493. The next prime is 22206511. The reversal of 22206506 is 60560222.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15500 + ... + 16871.

It is an arithmetic number, because the mean of its divisors is an integer number (2427900).

Almost surely, 2^22206506 is an apocalyptic number.

22206506 is a deficient number, since it is larger than the sum of its proper divisors (16639894).

22206506 is an equidigital number, since it uses as much as digits as its factorization.

22206506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32394 (or 32380 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 22206506 is about 4712.3779559793. The cubic root of 22206506 is about 281.0779282606.

Adding to 22206506 its reverse (60560222), we get a palindrome (82766728).

The spelling of 22206506 in words is "twenty-two million, two hundred six thousand, five hundred six".