26421233 has 4 divisors (see below), whose sum is σ = 27332340. Its totient is φ = 25510128.

The previous prime is 26421223. The next prime is 26421253. The reversal of 26421233 is 33212462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22165264 + 4255969 = 4708^2 + 2063^2 .

It is a cyclic number.

It is not a de Polignac number, because 26421233 - 2⁴ = 26421217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26421199 and 26421208.

It is not an unprimeable number, because it can be changed into a prime (26421223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455510 + ... + 455567.

It is an arithmetic number, because the mean of its divisors is an integer number (6833085).

Almost surely, 2^26421233 is an apocalyptic number.

It is an amenable number.

26421233 is a deficient number, since it is larger than the sum of its proper divisors (911107).

26421233 is an equidigital number, since it uses as much as digits as its factorization.

26421233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911106.

The product of its digits is 1728, while the sum is 23.

The square root of 26421233 is about 5140.1588496855. The cubic root of 26421233 is about 297.8409169978.

Adding to 26421233 its reverse (33212462), we get a palindrome (59633695).

The spelling of 26421233 in words is "twenty-six million, four hundred twenty-one thousand, two hundred thirty-three".