8001138 has 16 divisors (see below), whose sum is σ = 16047360. Its totient is φ = 2659536.

The previous prime is 8001107. The next prime is 8001157. The reversal of 8001138 is 8311008.

It is a happy number.

It is a Curzon number.

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, 703 + ... + 4061.

It is an arithmetic number, because the mean of its divisors is an integer number (1002960).

Almost surely, 2^8001138 is an apocalyptic number.

8001138 is an abundant number, since it is smaller than the sum of its proper divisors (8046222).

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

8001138 is a wasteful number, since it uses less digits than its factorization.

8001138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3761.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 8001138 is about 2828.6282894718. The cubic root of 8001138 is about 200.0094828837.

The spelling of 8001138 in words is "eight million, one thousand, one hundred thirty-eight".