16806838 has 4 divisors (see below), whose sum is σ = 25210260. Its totient is φ = 8403418.

The previous prime is 16806833. The next prime is 16806869. The reversal of 16806838 is 83860861.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 16806838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16806833) by changing a digit.

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 as a sum of consecutive naturals, namely, 4201708 + ... + 4201711.

It is an arithmetic number, because the mean of its divisors is an integer number (6302565).

Almost surely, 2^16806838 is an apocalyptic number.

16806838 is a deficient number, since it is larger than the sum of its proper divisors (8403422).

16806838 is an equidigital number, since it uses as much as digits as its factorization.

16806838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8403421.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 16806838 is about 4099.6143721087. The cubic root of 16806838 is about 256.1505766981.

The spelling of 16806838 in words is "sixteen million, eight hundred six thousand, eight hundred thirty-eight".