22304243 has 4 divisors (see below), whose sum is σ = 24019968. Its totient is φ = 20588520.

The previous prime is 22304207. The next prime is 22304251. The reversal of 22304243 is 34240322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22304243 - 2¹⁸ = 22042099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22304203) 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, 857843 + ... + 857868.

It is an arithmetic number, because the mean of its divisors is an integer number (6004992).

Almost surely, 2^22304243 is an apocalyptic number.

22304243 is a deficient number, since it is larger than the sum of its proper divisors (1715725).

22304243 is a wasteful number, since it uses less digits than its factorization.

22304243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715724.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 22304243 is about 4722.7368124849. The cubic root of 22304243 is about 281.4896920951.

Adding to 22304243 its reverse (34240322), we get a palindrome (56544565).

The spelling of 22304243 in words is "twenty-two million, three hundred four thousand, two hundred forty-three".