12276945 has 48 divisors (see below), whose sum is σ = 22800960. Its totient is φ = 6092928.

The previous prime is 12276937. The next prime is 12276949. The reversal of 12276945 is 54967221.

It is not a de Polignac number, because 12276945 - 2³ = 12276937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12276949) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 70879 + ... + 71051.

It is an arithmetic number, because the mean of its divisors is an integer number (475020).

Almost surely, 2^12276945 is an apocalyptic number.

12276945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12276945 is a deficient number, since it is larger than the sum of its proper divisors (10524015).

12276945 is a wasteful number, since it uses less digits than its factorization.

12276945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 283 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 12276945 is about 3503.8471713247. The cubic root of 12276945 is about 230.6907087978.

The spelling of 12276945 in words is "twelve million, two hundred seventy-six thousand, nine hundred forty-five".