26704421 has 4 divisors (see below), whose sum is σ = 27208332. Its totient is φ = 26200512.

The previous prime is 26704411. The next prime is 26704427. The reversal of 26704421 is 12440762.

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 9523396 + 17181025 = 3086^2 + 4145^2 .

It is a cyclic number.

It is not a de Polignac number, because 26704421 - 2¹⁴ = 26688037 is a prime.

It is a super-2 number, since 2×26704421² = 1426252201890482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26704427) 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, 251876 + ... + 251981.

It is an arithmetic number, because the mean of its divisors is an integer number (6802083).

Almost surely, 2^26704421 is an apocalyptic number.

It is an amenable number.

26704421 is a deficient number, since it is larger than the sum of its proper divisors (503911).

26704421 is an equidigital number, since it uses as much as digits as its factorization.

26704421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503910.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 26704421 is about 5167.6320495949. The cubic root of 26704421 is about 298.9012436576.

The spelling of 26704421 in words is "twenty-six million, seven hundred four thousand, four hundred twenty-one".