22806009 has 24 divisors (see below), whose sum is σ = 34500960. Its totient is φ = 14888880.

The previous prime is 22806001. The next prime is 22806011. The reversal of 22806009 is 90060822.

It is not a de Polignac number, because 22806009 - 2³ = 22806001 is a prime.

It is a super-2 number, since 2×22806009² = 1040228093016162, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22806001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100354 + ... + 100580.

It is an arithmetic number, because the mean of its divisors is an integer number (1437540).

Almost surely, 2^22806009 is an apocalyptic number.

It is an amenable number.

22806009 is a deficient number, since it is larger than the sum of its proper divisors (11694951).

22806009 is an equidigital number, since it uses as much as digits as its factorization.

22806009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 22806009 is about 4775.5637363562. The cubic root of 22806009 is about 283.5848966091.

The spelling of 22806009 in words is "twenty-two million, eight hundred six thousand, nine".