26332421 has 4 divisors (see below), whose sum is σ = 26348844. Its totient is φ = 26316000.

The previous prime is 26332403. The next prime is 26332429. The reversal of 26332421 is 12423362.

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 940900 + 25391521 = 970^2 + 5039^2 .

It is a cyclic number.

It is not a de Polignac number, because 26332421 - 2⁶ = 26332357 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 (26332429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5510 + ... + 9111.

It is an arithmetic number, because the mean of its divisors is an integer number (6587211).

Almost surely, 2^26332421 is an apocalyptic number.

It is an amenable number.

26332421 is a deficient number, since it is larger than the sum of its proper divisors (16423).

26332421 is a wasteful number, since it uses less digits than its factorization.

26332421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16422.

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

The square root of 26332421 is about 5131.5125450495. The cubic root of 26332421 is about 297.5068228080.

Adding to 26332421 its reverse (12423362), we get a palindrome (38755783).

The spelling of 26332421 in words is "twenty-six million, three hundred thirty-two thousand, four hundred twenty-one".