16238138 has 32 divisors (see below), whose sum is σ = 29306880. Its totient is φ = 6597360.

The previous prime is 16238137. The next prime is 16238143. The reversal of 16238138 is 83183261.

It is a happy number.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16238137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67823 + ... + 68061.

It is an arithmetic number, because the mean of its divisors is an integer number (915840).

Almost surely, 2^16238138 is an apocalyptic number.

16238138 is a deficient number, since it is larger than the sum of its proper divisors (13068742).

16238138 is a wasteful number, since it uses less digits than its factorization.

16238138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482.

The product of its digits is 6912, while the sum is 32.

The square root of 16238138 is about 4029.6573055286. The cubic root of 16238138 is about 253.2282046868.

The spelling of 16238138 in words is "sixteen million, two hundred thirty-eight thousand, one hundred thirty-eight".