12817245 has 16 divisors (see below), whose sum is σ = 23437440. Its totient is φ = 5859264.

The previous prime is 12817213. The next prime is 12817307. The reversal of 12817245 is 54271821.

12817245 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12817245 - 2⁵ = 12817213 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60930 + ... + 61139.

It is an arithmetic number, because the mean of its divisors is an integer number (1464840).

Almost surely, 2^12817245 is an apocalyptic number.

12817245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12817245 is a deficient number, since it is larger than the sum of its proper divisors (10620195).

12817245 is a wasteful number, since it uses less digits than its factorization.

12817245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122084.

The product of its digits is 4480, while the sum is 30.

The square root of 12817245 is about 3580.1180148146. The cubic root of 12817245 is about 234.0264233439.

The spelling of 12817245 in words is "twelve million, eight hundred seventeen thousand, two hundred forty-five".