10805215 has 8 divisors (see below), whose sum is σ = 13092768. Its totient is φ = 8559840.

The previous prime is 10805209. The next prime is 10805237. The reversal of 10805215 is 51250801.

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

It is not a de Polignac number, because 10805215 - 2⁷ = 10805087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9976 + ... + 11005.

It is an arithmetic number, because the mean of its divisors is an integer number (1636596).

Almost surely, 2^10805215 is an apocalyptic number.

10805215 is a deficient number, since it is larger than the sum of its proper divisors (2287553).

10805215 is a wasteful number, since it uses less digits than its factorization.

10805215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21089.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 10805215 is about 3287.1286862549. The cubic root of 10805215 is about 221.0774623865.

The spelling of 10805215 in words is "ten million, eight hundred five thousand, two hundred fifteen".