22784243 has 2 divisors, whose sum is σ = 22784244. Its totient is φ = 22784242.

The previous prime is 22784189. The next prime is 22784257. The reversal of 22784243 is 34248722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22784243 - 2¹⁰ = 22783219 is a prime.

It is not a weakly prime, because it can be changed into another prime (22784263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11392121 + 11392122.

It is an arithmetic number, because the mean of its divisors is an integer number (11392122).

Almost surely, 2^22784243 is an apocalyptic number.

22784243 is a deficient number, since it is larger than the sum of its proper divisors (1).

22784243 is an equidigital number, since it uses as much as digits as its factorization.

22784243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 32.

The square root of 22784243 is about 4773.2842990964. The cubic root of 22784243 is about 283.4946503122.

The spelling of 22784243 in words is "twenty-two million, seven hundred eighty-four thousand, two hundred forty-three".