12279776 has 36 divisors (see below), whose sum is σ = 25539192. Its totient is φ = 5811264.

The previous prime is 12279703. The next prime is 12279779. The reversal of 12279776 is 67797221.

It is a super-2 number, since 2×12279776² = 301585797220352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12279779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11021 + ... + 12083.

It is an arithmetic number, because the mean of its divisors is an integer number (709422).

Almost surely, 2^12279776 is an apocalyptic number.

12279776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12279776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12769596).

12279776 is an abundant number, since it is smaller than the sum of its proper divisors (13259416).

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

12279776 is a wasteful number, since it uses less digits than its factorization.

12279776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111 (or 1084 counting only the distinct ones).

The product of its digits is 74088, while the sum is 41.

The square root of 12279776 is about 3504.2511325531. The cubic root of 12279776 is about 230.7084394630.

The spelling of 12279776 in words is "twelve million, two hundred seventy-nine thousand, seven hundred seventy-six".