26812865 has 16 divisors (see below), whose sum is σ = 33111936. Its totient is φ = 20832000.

The previous prime is 26812853. The next prime is 26812867. The reversal of 26812865 is 56821862.

It is a de Polignac number, because none of the positive numbers 2^k-26812865 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26812867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66665 + ... + 67065.

It is an arithmetic number, because the mean of its divisors is an integer number (2069496).

Almost surely, 2^26812865 is an apocalyptic number.

It is an amenable number.

26812865 is a deficient number, since it is larger than the sum of its proper divisors (6299071).

26812865 is a wasteful number, since it uses less digits than its factorization.

26812865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760.

The product of its digits is 46080, while the sum is 38.

The square root of 26812865 is about 5178.1140389142. The cubic root of 26812865 is about 299.3052999553.

The spelling of 26812865 in words is "twenty-six million, eight hundred twelve thousand, eight hundred sixty-five".