12276509 has 12 divisors (see below), whose sum is σ = 14364000. Its totient is φ = 10461528.

The previous prime is 12276497. The next prime is 12276553. The reversal of 12276509 is 90567221.

It is not a de Polignac number, because 12276509 - 2⁴ = 12276493 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12276559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9122 + ... + 10380.

It is an arithmetic number, because the mean of its divisors is an integer number (1197000).

Almost surely, 2^12276509 is an apocalyptic number.

It is an amenable number.

12276509 is a deficient number, since it is larger than the sum of its proper divisors (2087491).

12276509 is a wasteful number, since it uses less digits than its factorization.

12276509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472 (or 1465 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 12276509 is about 3503.7849534468. The cubic root of 12276509 is about 230.6879778703.

The spelling of 12276509 in words is "twelve million, two hundred seventy-six thousand, five hundred nine".