8238138 has 16 divisors (see below), whose sum is σ = 16506336. Its totient is φ = 2741040.

The previous prime is 8238121. The next prime is 8238151. The reversal of 8238138 is 8318328.

It is a junction number, because it is equal to n+sod(n) for n = 8238099 and 8238108.

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, 4020 + ... + 5712.

It is an arithmetic number, because the mean of its divisors is an integer number (1031646).

Almost surely, 2^8238138 is an apocalyptic number.

8238138 is an abundant number, since it is smaller than the sum of its proper divisors (8268198).

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

8238138 is a wasteful number, since it uses less digits than its factorization.

8238138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509.

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

The square root of 8238138 is about 2870.2156713390. The cubic root of 8238138 is about 201.9651117736.

The spelling of 8238138 in words is "eight million, two hundred thirty-eight thousand, one hundred thirty-eight".