26804285 has 4 divisors (see below), whose sum is σ = 32165148. Its totient is φ = 21443424.

The previous prime is 26804279. The next prime is 26804293. The reversal of 26804285 is 58240862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58240862 = 2 ⋅29120431.

It can be written as a sum of positive squares in 2 ways, for example, as 19175641 + 7628644 = 4379^2 + 2762^2 .

It is a cyclic number.

It is not a de Polignac number, because 26804285 - 2¹⁶ = 26738749 is a prime.

It is a super-2 number, since 2×26804285² = 1436939388722450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2680424 + ... + 2680433.

It is an arithmetic number, because the mean of its divisors is an integer number (8041287).

Almost surely, 2^26804285 is an apocalyptic number.

It is an amenable number.

26804285 is a deficient number, since it is larger than the sum of its proper divisors (5360863).

26804285 is an equidigital number, since it uses as much as digits as its factorization.

26804285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5360862.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 26804285 is about 5177.2854856575. The cubic root of 26804285 is about 299.2733710853.

The spelling of 26804285 in words is "twenty-six million, eight hundred four thousand, two hundred eighty-five".