12279276 has 42 divisors (see below), whose sum is σ = 32226012. Its totient is φ = 4092120.

The previous prime is 12279247. The next prime is 12279283. The reversal of 12279276 is 67297221.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12279276.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 811 + ... + 5021.

It is an arithmetic number, because the mean of its divisors is an integer number (767286).

Almost surely, 2^12279276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12279276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16113006).

12279276 is an abundant number, since it is smaller than the sum of its proper divisors (19946736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12279276 is an equidigital number, since it uses as much as digits as its factorization.

12279276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233 (or 4216 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 12279276 is about 3504.1797899080. The cubic root of 12279276 is about 230.7053081413.

The spelling of 12279276 in words is "twelve million, two hundred seventy-nine thousand, two hundred seventy-six".