26808769 has 8 divisors (see below), whose sum is σ = 29802752. Its totient is φ = 23947920.

The previous prime is 26808767. The next prime is 26808787. The reversal of 26808769 is 96780862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26808769 - 2¹ = 26808767 is a prime.

It is a super-2 number, since 2×26808769² = 1437420190590722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26808767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32859 + ... + 33664.

It is an arithmetic number, because the mean of its divisors is an integer number (3725344).

Almost surely, 2^26808769 is an apocalyptic number.

It is an amenable number.

26808769 is a deficient number, since it is larger than the sum of its proper divisors (2993983).

26808769 is a wasteful number, since it uses less digits than its factorization.

26808769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66567.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 26808769 is about 5177.7185130132. The cubic root of 26808769 is about 299.2900583049.

It can be divided in two parts, 2680 and 8769, that added together give a square (11449 = 107²).

The spelling of 26808769 in words is "twenty-six million, eight hundred eight thousand, seven hundred sixty-nine".