10856309 has 8 divisors (see below), whose sum is σ = 11047680. Its totient is φ = 10666656.

The previous prime is 10856297. The next prime is 10856323. The reversal of 10856309 is 90365801.

10856309 is digitally balanced in base 3, because in such base 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 10856309 - 2¹² = 10852213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10856359) 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, 19574 + ... + 20120.

It is an arithmetic number, because the mean of its divisors is an integer number (1380960).

Almost surely, 2^10856309 is an apocalyptic number.

It is an amenable number.

10856309 is a deficient number, since it is larger than the sum of its proper divisors (191371).

10856309 is an equidigital number, since it uses as much as digits as its factorization.

10856309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 10856309 is about 3294.8913487397. The cubic root of 10856309 is about 221.4253800045.

The spelling of 10856309 in words is "ten million, eight hundred fifty-six thousand, three hundred nine".