12956890 has 32 divisors (see below), whose sum is σ = 24883200. Its totient is φ = 4840704.

The previous prime is 12956863. The next prime is 12956903. The reversal of 12956890 is 9865921.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 33639 + ... + 34021.

It is an arithmetic number, because the mean of its divisors is an integer number (777600).

Almost surely, 2^12956890 is an apocalyptic number.

12956890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12956890 is a deficient number, since it is larger than the sum of its proper divisors (11926310).

12956890 is a wasteful number, since it uses less digits than its factorization.

12956890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 12956890 is about 3599.5680296391. The cubic root of 12956890 is about 234.8732680189.

The spelling of 12956890 in words is "twelve million, nine hundred fifty-six thousand, eight hundred ninety".