26445213 has 6 divisors (see below), whose sum is σ = 38198654. Its totient is φ = 17630136.

The previous prime is 26445203. The next prime is 26445227. The reversal of 26445213 is 31254462.

26445213 is a `hidden beast` number, since 2 + 6 + 445 + 213 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17994564 + 8450649 = 4242^2 + 2907^2 .

It is not a de Polignac number, because 26445213 - 2⁴ = 26445197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26445203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1469170 + ... + 1469187.

Almost surely, 2^26445213 is an apocalyptic number.

It is an amenable number.

26445213 is a deficient number, since it is larger than the sum of its proper divisors (11753441).

26445213 is a wasteful number, since it uses less digits than its factorization.

26445213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938363 (or 2938360 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 26445213 is about 5142.4909333902. The cubic root of 26445213 is about 297.9309968906.

Adding to 26445213 its reverse (31254462), we get a palindrome (57699675).

Subtracting 26445213 from its reverse (31254462), we obtain a square (4809249 = 2193²).

The spelling of 26445213 in words is "twenty-six million, four hundred forty-five thousand, two hundred thirteen".