26933221 has 4 divisors (see below), whose sum is σ = 30780832. Its totient is φ = 23085612.

The previous prime is 26933213. The next prime is 26933239. The reversal of 26933221 is 12233962.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26933221 - 2³ = 26933213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26933221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26933261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1923795 + ... + 1923808.

It is an arithmetic number, because the mean of its divisors is an integer number (7695208).

Almost surely, 2^26933221 is an apocalyptic number.

It is an amenable number.

26933221 is a deficient number, since it is larger than the sum of its proper divisors (3847611).

26933221 is an equidigital number, since it uses as much as digits as its factorization.

26933221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847610.

The product of its digits is 3888, while the sum is 28.

The square root of 26933221 is about 5189.7226322801. The cubic root of 26933221 is about 299.7524661832.

The spelling of 26933221 in words is "twenty-six million, nine hundred thirty-three thousand, two hundred twenty-one".