26642216 has 16 divisors (see below), whose sum is σ = 50414100. Its totient is φ = 13198464.

The previous prime is 26642207. The next prime is 26642219. The reversal of 26642216 is 61224662.

It can be written as a sum of positive squares in 2 ways, for example, as 26522500 + 119716 = 5150^2 + 346^2 .

It is not an unprimeable number, because it can be changed into a prime (26642219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14405 + ... + 16148.

Almost surely, 2^26642216 is an apocalyptic number.

It is an amenable number.

26642216 is a deficient number, since it is larger than the sum of its proper divisors (23771884).

26642216 is a wasteful number, since it uses less digits than its factorization.

26642216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30668 (or 30664 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 26642216 is about 5161.6098264011. The cubic root of 26642216 is about 298.6689774038.

Adding to 26642216 its reverse (61224662), we get a palindrome (87866878).

The spelling of 26642216 in words is "twenty-six million, six hundred forty-two thousand, two hundred sixteen".