16786138 has 16 divisors (see below), whose sum is σ = 25923240. Its totient is φ = 8147200.

The previous prime is 16786129. The next prime is 16786151. The reversal of 16786138 is 83168761.

It can be written as a sum of positive squares in 4 ways, for example, as 1159929 + 15626209 = 1077^2 + 3953^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16786138.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21678 + ... + 22438.

Almost surely, 2^16786138 is an apocalyptic number.

16786138 is a deficient number, since it is larger than the sum of its proper divisors (9137102).

16786138 is a wasteful number, since it uses less digits than its factorization.

16786138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073.

The product of its digits is 48384, while the sum is 40.

The square root of 16786138 is about 4097.0889665713. The cubic root of 16786138 is about 256.0453715969.

The spelling of 16786138 in words is "sixteen million, seven hundred eighty-six thousand, one hundred thirty-eight".