26284021 has 2 divisors, whose sum is σ = 26284022. Its totient is φ = 26284020.

The previous prime is 26283997. The next prime is 26284039. The reversal of 26284021 is 12048262.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25704900 + 579121 = 5070^2 + 761^2 .

It is a cyclic number.

It is not a de Polignac number, because 26284021 - 2⁷ = 26283893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26384021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13142010 + 13142011.

It is an arithmetic number, because the mean of its divisors is an integer number (13142011).

Almost surely, 2^26284021 is an apocalyptic number.

It is an amenable number.

26284021 is a deficient number, since it is larger than the sum of its proper divisors (1).

26284021 is an equidigital number, since it uses as much as digits as its factorization.

26284021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 26284021 is about 5126.7944175674. The cubic root of 26284021 is about 297.3244346990.

The spelling of 26284021 in words is "twenty-six million, two hundred eighty-four thousand, twenty-one".