12296781 has 24 divisors (see below), whose sum is σ = 21369920. Its totient is φ = 6656256.

The previous prime is 12296759. The next prime is 12296803. The reversal of 12296781 is 18769221.

It is an interprime number because it is at equal distance from previous prime (12296759) and next prime (12296803).

It is not a de Polignac number, because 12296781 - 2⁵ = 12296749 is a prime.

It is a super-2 number, since 2×12296781² = 302421645923922, 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 Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12296731) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3940 + ... + 6333.

Almost surely, 2^12296781 is an apocalyptic number.

It is an amenable number.

12296781 is a deficient number, since it is larger than the sum of its proper divisors (9073139).

12296781 is a wasteful number, since it uses less digits than its factorization.

12296781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10305 (or 10302 counting only the distinct ones).

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

The square root of 12296781 is about 3506.6766317983. The cubic root of 12296781 is about 230.8148851468.

The spelling of 12296781 in words is "twelve million, two hundred ninety-six thousand, seven hundred eighty-one".