12276981 has 16 divisors (see below), whose sum is σ = 18326400. Its totient is φ = 8122464.

The previous prime is 12276977. The next prime is 12276989. The reversal of 12276981 is 18967221.

12276981 = T₃₅₃ + T₃₅₄ + ... + T₄₈₉.

It is not a de Polignac number, because 12276981 - 2² = 12276977 is a prime.

It is a super-2 number, since 2×12276981² = 301448524948722, which contains 22 as substring.

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (12276989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2040 + ... + 5358.

It is an arithmetic number, because the mean of its divisors is an integer number (1145400).

Almost surely, 2^12276981 is an apocalyptic number.

It is an amenable number.

12276981 is a deficient number, since it is larger than the sum of its proper divisors (6049419).

12276981 is a wasteful number, since it uses less digits than its factorization.

12276981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3465 (or 3459 counting only the distinct ones).

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

The square root of 12276981 is about 3503.8523085313. The cubic root of 12276981 is about 230.6909342844.

The spelling of 12276981 in words is "twelve million, two hundred seventy-six thousand, nine hundred eighty-one".