12256929 has 12 divisors (see below), whose sum is σ = 17929600. Its totient is φ = 8067384.

The previous prime is 12256927. The next prime is 12256961. The reversal of 12256929 is 92965221.

It is a happy number.

It is not a de Polignac number, because 12256929 - 2¹ = 12256927 is a prime.

It is a super-2 number, since 2×12256929² = 300464617022082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12256893 and 12256902.

It is not an unprimeable number, because it can be changed into a prime (12256927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7909 + ... + 9330.

Almost surely, 2^12256929 is an apocalyptic number.

It is an amenable number.

12256929 is a deficient number, since it is larger than the sum of its proper divisors (5672671).

12256929 is a wasteful number, since it uses less digits than its factorization.

12256929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17324 (or 17321 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 12256929 is about 3500.9897172085. The cubic root of 12256929 is about 230.5652699659.

The spelling of 12256929 in words is "twelve million, two hundred fifty-six thousand, nine hundred twenty-nine".