26936221 has 16 divisors (see below), whose sum is σ = 30079728. Its totient is φ = 23961600.

The previous prime is 26936213. The next prime is 26936227. The reversal of 26936221 is 12263962.

It can be written as a sum of positive squares in 8 ways, for example, as 8916196 + 18020025 = 2986^2 + 4245^2 .

It is not a de Polignac number, because 26936221 - 2³ = 26936213 is a prime.

It is a super-5 number, since 5×26936221⁵ (a number of 38 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26936227) 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 15 ways as a sum of consecutive naturals, for example, 51441 + ... + 51961.

It is an arithmetic number, because the mean of its divisors is an integer number (1879983).

Almost surely, 2^26936221 is an apocalyptic number.

It is an amenable number.

26936221 is a deficient number, since it is larger than the sum of its proper divisors (3143507).

26936221 is a wasteful number, since it uses less digits than its factorization.

26936221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672.

The product of its digits is 7776, while the sum is 31.

The square root of 26936221 is about 5190.0116570197. The cubic root of 26936221 is about 299.7635952397.

The spelling of 26936221 in words is "twenty-six million, nine hundred thirty-six thousand, two hundred twenty-one".