12921076 has 12 divisors (see below), whose sum is σ = 25842208. Its totient is φ = 5537592.

The previous prime is 12921061. The next prime is 12921089. The reversal of 12921076 is 67012921.

It is a happy number.

12921076 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 461467 = 12921076 / (1 + 2 + 9 + 2 + 1 + 0 + 7 + 6).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 230706 + ... + 230761.

Almost surely, 2^12921076 is an apocalyptic number.

It is an amenable number.

12921076 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12921076 is a wasteful number, since it uses less digits than its factorization.

12921076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461478 (or 461476 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 12921076 is about 3594.5898236099. The cubic root of 12921076 is about 234.6566647697.

Adding to 12921076 its reverse (67012921), we get a palindrome (79933997).

It can be divided in two parts, 129210 and 76, that added together give a triangular number (129286 = T₅₀₈).

The spelling of 12921076 in words is "twelve million, nine hundred twenty-one thousand, seventy-six".