12856291 has 8 divisors (see below), whose sum is σ = 14791424. Its totient is φ = 10945800.

The previous prime is 12856273. The next prime is 12856321. The reversal of 12856291 is 19265821.

12856291 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12856291 - 2⁷ = 12856163 is a prime.

It is a Duffinian number.

12856291 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (12856201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5025 + ... + 7138.

It is an arithmetic number, because the mean of its divisors is an integer number (1848928).

Almost surely, 2^12856291 is an apocalyptic number.

12856291 is a deficient number, since it is larger than the sum of its proper divisors (1935133).

12856291 is a wasteful number, since it uses less digits than its factorization.

12856291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12321.

The product of its digits is 8640, while the sum is 34.

The square root of 12856291 is about 3585.5670402323. The cubic root of 12856291 is about 234.2638256972.

The spelling of 12856291 in words is "twelve million, eight hundred fifty-six thousand, two hundred ninety-one".