26432921 has 2 divisors, whose sum is σ = 26432922. Its totient is φ = 26432920.

The previous prime is 26432893. The next prime is 26432929. The reversal of 26432921 is 12923462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23232400 + 3200521 = 4820^2 + 1789^2 .

It is a cyclic number.

It is not a de Polignac number, because 26432921 - 2²² = 22238617 is a prime.

It is not a weakly prime, because it can be changed into another prime (26432929) 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 as a sum of consecutive naturals, namely, 13216460 + 13216461.

It is an arithmetic number, because the mean of its divisors is an integer number (13216461).

Almost surely, 2^26432921 is an apocalyptic number.

It is an amenable number.

26432921 is a deficient number, since it is larger than the sum of its proper divisors (1).

26432921 is an equidigital number, since it uses as much as digits as its factorization.

26432921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The square root of 26432921 is about 5141.2956538211. The cubic root of 26432921 is about 297.8848292992.

The spelling of 26432921 in words is "twenty-six million, four hundred thirty-two thousand, nine hundred twenty-one".