12280717 has 8 divisors (see below), whose sum is σ = 12880440. Its totient is φ = 11692800.

The previous prime is 12280693. The next prime is 12280721. The reversal of 12280717 is 71708221.

It can be written as a sum of positive squares in 4 ways, for example, as 5900041 + 6380676 = 2429^2 + 2526^2 .

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

It is not a de Polignac number, because 12280717 - 2¹⁹ = 11756429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12280417) 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, 784 + ... + 5017.

It is an arithmetic number, because the mean of its divisors is an integer number (1610055).

Almost surely, 2^12280717 is an apocalyptic number.

It is an amenable number.

12280717 is a deficient number, since it is larger than the sum of its proper divisors (599723).

12280717 is an equidigital number, since it uses as much as digits as its factorization.

12280717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5903.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 12280717 is about 3504.3853954724. The cubic root of 12280717 is about 230.7143323798.

Adding to 12280717 its reverse (71708221), we get a palindrome (83988938).

The spelling of 12280717 in words is "twelve million, two hundred eighty thousand, seven hundred seventeen".