22304013 has 8 divisors (see below), whose sum is σ = 29774976. Its totient is φ = 14851200.

The previous prime is 22303993. The next prime is 22304027. The reversal of 22304013 is 31040322.

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

It is not a de Polignac number, because 22304013 - 2¹⁰ = 22302989 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22303983 and 22304001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22304033) by changing a digit.

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, 1348 + ... + 6813.

It is an arithmetic number, because the mean of its divisors is an integer number (3721872).

Almost surely, 2^22304013 is an apocalyptic number.

It is an amenable number.

22304013 is a deficient number, since it is larger than the sum of its proper divisors (7470963).

22304013 is an equidigital number, since it uses as much as digits as its factorization.

22304013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9075.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 22304013 is about 4722.7124621344. The cubic root of 22304013 is about 281.4887245236.

Adding to 22304013 its reverse (31040322), we get a palindrome (53344335).

The spelling of 22304013 in words is "twenty-two million, three hundred four thousand, thirteen".