22418047 has 2 divisors, whose sum is σ = 22418048. Its totient is φ = 22418046.

The previous prime is 22418017. The next prime is 22418057. The reversal of 22418047 is 74081422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22418047 - 2¹⁹ = 21893759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22418017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11209023 + 11209024.

It is an arithmetic number, because the mean of its divisors is an integer number (11209024).

Almost surely, 2^22418047 is an apocalyptic number.

22418047 is a deficient number, since it is larger than the sum of its proper divisors (1).

22418047 is an equidigital number, since it uses as much as digits as its factorization.

22418047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 22418047 is about 4734.7700049738. The cubic root of 22418047 is about 281.9676328896.

Adding to 22418047 its reverse (74081422), we get a palindrome (96499469).

The spelling of 22418047 in words is "twenty-two million, four hundred eighteen thousand, forty-seven".