13840238 has 8 divisors (see below), whose sum is σ = 21243288. Its totient is φ = 6759144.

The previous prime is 13840237. The next prime is 13840249. The reversal of 13840238 is 83204831.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13840238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13840237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80381 + ... + 80552.

It is an arithmetic number, because the mean of its divisors is an integer number (2655411).

Almost surely, 2^13840238 is an apocalyptic number.

13840238 is a deficient number, since it is larger than the sum of its proper divisors (7403050).

13840238 is a wasteful number, since it uses less digits than its factorization.

13840238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160978.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 13840238 is about 3720.2470348083. The cubic root of 13840238 is about 240.0939331383.

The spelling of 13840238 in words is "thirteen million, eight hundred forty thousand, two hundred thirty-eight".