26886213 has 12 divisors (see below), whose sum is σ = 38944620. Its totient is φ = 17873856.

The previous prime is 26886199. The next prime is 26886221. The reversal of 26886213 is 31268862.

26886213 is a `hidden beast` number, since 26 + 8 + 8 + 621 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16016004 + 10870209 = 4002^2 + 3297^2 .

It is a de Polignac number, because none of the positive numbers 2^k-26886213 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26886413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 648 + ... + 7361.

It is an arithmetic number, because the mean of its divisors is an integer number (3245385).

Almost surely, 2^26886213 is an apocalyptic number.

It is an amenable number.

26886213 is a deficient number, since it is larger than the sum of its proper divisors (12058407).

26886213 is a wasteful number, since it uses less digits than its factorization.

26886213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8388 (or 8385 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 26886213 is about 5185.1917033028. The cubic root of 26886213 is about 299.5779732565.

The spelling of 26886213 in words is "twenty-six million, eight hundred eighty-six thousand, two hundred thirteen".