12281976 has 64 divisors (see below), whose sum is σ = 38995200. Its totient is φ = 3508704.

The previous prime is 12281963. The next prime is 12281981. The reversal of 12281976 is 67918221.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 12281976.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2550 + ... + 5573.

It is an arithmetic number, because the mean of its divisors is an integer number (609300).

Almost surely, 2^12281976 is an apocalyptic number.

It is an amenable number.

12281976 is an abundant number, since it is smaller than the sum of its proper divisors (26713224).

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

12281976 is a wasteful number, since it uses less digits than its factorization.

12281976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8145 (or 8135 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 12281976 is about 3504.5650229379. The cubic root of 12281976 is about 230.7222162686.

The spelling of 12281976 in words is "twelve million, two hundred eighty-one thousand, nine hundred seventy-six".