8138238 has 16 divisors (see below), whose sum is σ = 16623360. Its totient is φ = 2654936.

The previous prime is 8138227. The next prime is 8138239. The reversal of 8138238 is 8328318.

It is a junction number, because it is equal to n+sod(n) for n = 8138199 and 8138208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8138239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14148 + ... + 14711.

It is an arithmetic number, because the mean of its divisors is an integer number (1038960).

Almost surely, 2^8138238 is an apocalyptic number.

8138238 is an abundant number, since it is smaller than the sum of its proper divisors (8485122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8138238 is a wasteful number, since it uses less digits than its factorization.

8138238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28911.

The product of its digits is 9216, while the sum is 33.

The square root of 8138238 is about 2852.7597164851. The cubic root of 8138238 is about 201.1454109789.

The spelling of 8138238 in words is "eight million, one hundred thirty-eight thousand, two hundred thirty-eight".