12279856 has 20 divisors (see below), whose sum is σ = 24436432. Its totient is φ = 5973696.

The previous prime is 12279853. The next prime is 12279859. The reversal of 12279856 is 65897221.

It is an interprime number because it is at equal distance from previous prime (12279853) and next prime (12279859).

It is a super-3 number, since 3×12279856³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12279851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9780 + ... + 10963.

Almost surely, 2^12279856 is an apocalyptic number.

12279856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12279856 is a deficient number, since it is larger than the sum of its proper divisors (12156576).

12279856 is a wasteful number, since it uses less digits than its factorization.

12279856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20788 (or 20782 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 12279856 is about 3504.2625472416. The cubic root of 12279856 is about 230.7089404666.

The spelling of 12279856 in words is "twelve million, two hundred seventy-nine thousand, eight hundred fifty-six".