22782743 has 2 divisors, whose sum is σ = 22782744. Its totient is φ = 22782742.

The previous prime is 22782667. The next prime is 22782751. The reversal of 22782743 is 34728722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22782743 - 2¹² = 22778647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22782763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11391371 + 11391372.

It is an arithmetic number, because the mean of its divisors is an integer number (11391372).

Almost surely, 2^22782743 is an apocalyptic number.

22782743 is a deficient number, since it is larger than the sum of its proper divisors (1).

22782743 is an equidigital number, since it uses as much as digits as its factorization.

22782743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 35.

The square root of 22782743 is about 4773.1271719911. The cubic root of 22782743 is about 283.4884288882.

The spelling of 22782743 in words is "twenty-two million, seven hundred eighty-two thousand, seven hundred forty-three".