10809638 has 16 divisors (see below), whose sum is σ = 19129344. Its totient is φ = 4483080.

The previous prime is 10809619. The next prime is 10809653. The reversal of 10809638 is 83690801.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 10809598 and 10809607.

It is a congruent number.

It is an unprimeable number.

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, 12020 + ... + 12887.

It is an arithmetic number, because the mean of its divisors is an integer number (1195584).

Almost surely, 2^10809638 is an apocalyptic number.

10809638 is a deficient number, since it is larger than the sum of its proper divisors (8319706).

10809638 is a wasteful number, since it uses less digits than its factorization.

10809638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24947.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 10809638 is about 3287.8013930285. The cubic root of 10809638 is about 221.1076235086.

The spelling of 10809638 in words is "ten million, eight hundred nine thousand, six hundred thirty-eight".