12309275 has 24 divisors (see below), whose sum is σ = 17637264. Its totient is φ = 8422400.

The previous prime is 12309259. The next prime is 12309277. The reversal of 12309275 is 57290321.

It is not a de Polignac number, because 12309275 - 2⁴ = 12309259 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12309277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3359 + ... + 5991.

It is an arithmetic number, because the mean of its divisors is an integer number (734886).

Almost surely, 2^12309275 is an apocalyptic number.

12309275 is a deficient number, since it is larger than the sum of its proper divisors (5327989).

12309275 is a wasteful number, since it uses less digits than its factorization.

12309275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671 (or 2666 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 12309275 is about 3508.4576383363. The cubic root of 12309275 is about 230.8930309380.

Adding to 12309275 its reverse (57290321), we get a palindrome (69599596).

The spelling of 12309275 in words is "twelve million, three hundred nine thousand, two hundred seventy-five".