22509066 has 8 divisors (see below), whose sum is σ = 45018144. Its totient is φ = 7503020.

The previous prime is 22509049. The next prime is 22509073. The reversal of 22509066 is 66090522.

It is a sphenic number, since it is the product of 3 distinct primes.

22509066 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1875750 + ... + 1875761.

It is an arithmetic number, because the mean of its divisors is an integer number (5627268).

Almost surely, 2^22509066 is an apocalyptic number.

22509066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22509066 is a wasteful number, since it uses less digits than its factorization.

22509066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3751516.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 22509066 is about 4744.3720343160. The cubic root of 22509066 is about 282.3487210511.

Adding to 22509066 its reverse (66090522), we get a palindrome (88599588).

The spelling of 22509066 in words is "twenty-two million, five hundred nine thousand, sixty-six".