22784791 has 2 divisors, whose sum is σ = 22784792. Its totient is φ = 22784790.

The previous prime is 22784761. The next prime is 22784803. The reversal of 22784791 is 19748722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22784791 - 2⁵ = 22784759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22784761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11392395 + 11392396.

It is an arithmetic number, because the mean of its divisors is an integer number (11392396).

Almost surely, 2^22784791 is an apocalyptic number.

22784791 is a deficient number, since it is larger than the sum of its proper divisors (1).

22784791 is an equidigital number, since it uses as much as digits as its factorization.

22784791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 40.

The square root of 22784791 is about 4773.3417015755. The cubic root of 22784791 is about 283.4969231376.

The spelling of 22784791 in words is "twenty-two million, seven hundred eighty-four thousand, seven hundred ninety-one".