26432421 has 4 divisors (see below), whose sum is σ = 35243232. Its totient is φ = 17621612.

The previous prime is 26432389. The next prime is 26432431. The reversal of 26432421 is 12423462.

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 26432421 - 2⁵ = 26432389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26432391 and 26432400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26432431) 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 3 ways as a sum of consecutive naturals, for example, 4405401 + ... + 4405406.

It is an arithmetic number, because the mean of its divisors is an integer number (8810808).

Almost surely, 2^26432421 is an apocalyptic number.

It is an amenable number.

26432421 is a deficient number, since it is larger than the sum of its proper divisors (8810811).

26432421 is an equidigital number, since it uses as much as digits as its factorization.

26432421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8810810.

The product of its digits is 2304, while the sum is 24.

The square root of 26432421 is about 5141.2470277161. The cubic root of 26432421 is about 297.8829510435.

Adding to 26432421 its reverse (12423462), we get a palindrome (38855883).

The spelling of 26432421 in words is "twenty-six million, four hundred thirty-two thousand, four hundred twenty-one".