26804971 has 4 divisors (see below), whose sum is σ = 28381752. Its totient is φ = 25228192.

The previous prime is 26804957. The next prime is 26804977. The reversal of 26804971 is 17940862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26804971 - 2¹⁵ = 26772203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26804971.

It is not an unprimeable number, because it can be changed into a prime (26804977) 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, 788365 + ... + 788398.

It is an arithmetic number, because the mean of its divisors is an integer number (7095438).

Almost surely, 2^26804971 is an apocalyptic number.

26804971 is a deficient number, since it is larger than the sum of its proper divisors (1576781).

26804971 is a wasteful number, since it uses less digits than its factorization.

26804971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576780.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 26804971 is about 5177.3517361678. The cubic root of 26804971 is about 299.2759241570.

The spelling of 26804971 in words is "twenty-six million, eight hundred four thousand, nine hundred seventy-one".