12656330 has 16 divisors (see below), whose sum is σ = 24121800. Its totient is φ = 4764672.

The previous prime is 12656323. The next prime is 12656333. The reversal of 12656330 is 3365621.

It can be written as a sum of positive squares in 4 ways, for example, as 8779369 + 3876961 = 2963^2 + 1969^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12656330.

It is not an unprimeable number, because it can be changed into a prime (12656333) 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 7 ways as a sum of consecutive naturals, for example, 37055 + ... + 37394.

Almost surely, 2^12656330 is an apocalyptic number.

12656330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12656330 is a deficient number, since it is larger than the sum of its proper divisors (11465470).

12656330 is a wasteful number, since it uses less digits than its factorization.

12656330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74473.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 12656330 is about 3557.5736113256. The cubic root of 12656330 is about 233.0429289650.

The spelling of 12656330 in words is "twelve million, six hundred fifty-six thousand, three hundred thirty".