22806013 has 4 divisors (see below), whose sum is σ = 22841280. Its totient is φ = 22770748.

The previous prime is 22806011. The next prime is 22806029. The reversal of 22806013 is 31060822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22806013 - 2¹ = 22806011 is a prime.

It is a super-2 number, since 2×22806013² = 1040228457912338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22806011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16645 + ... + 17962.

It is an arithmetic number, because the mean of its divisors is an integer number (5710320).

Almost surely, 2^22806013 is an apocalyptic number.

It is an amenable number.

22806013 is a deficient number, since it is larger than the sum of its proper divisors (35267).

22806013 is an equidigital number, since it uses as much as digits as its factorization.

22806013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35266.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 22806013 is about 4775.5641551549. The cubic root of 22806013 is about 283.5849131886.

Adding to 22806013 its reverse (31060822), we get a palindrome (53866835).

The spelling of 22806013 in words is "twenty-two million, eight hundred six thousand, thirteen".