12805071 has 8 divisors (see below), whose sum is σ = 17535024. Its totient is φ = 8305920.

The previous prime is 12805061. The next prime is 12805073. The reversal of 12805071 is 17050821.

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

It is not a de Polignac number, because 12805071 - 2⁶ = 12805007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12805073) 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, 57570 + ... + 57791.

It is an arithmetic number, because the mean of its divisors is an integer number (2191878).

Almost surely, 2^12805071 is an apocalyptic number.

12805071 is a deficient number, since it is larger than the sum of its proper divisors (4729953).

12805071 is a wasteful number, since it uses less digits than its factorization.

12805071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115401.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 12805071 is about 3578.4173876170. The cubic root of 12805071 is about 233.9523060076.

Adding to 12805071 its reverse (17050821), we get a palindrome (29855892).

The spelling of 12805071 in words is "twelve million, eight hundred five thousand, seventy-one".