384138 has 12 divisors (see below), whose sum is σ = 832338. Its totient is φ = 128040.

The previous prime is 384133. The next prime is 384143. The reversal of 384138 is 831483.

It is an interprime number because it is at equal distance from previous prime (384133) and next prime (384143).

It can be written as a sum of positive squares in only one way, i.e., 205209 + 178929 = 453^2 + 423^2 .

It is not an unprimeable number, because it can be changed into a prime (384133) by changing a digit.

384138 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10653 + ... + 10688.

2³⁸⁴¹³⁸ is an apocalyptic number.

384138 is an abundant number, since it is smaller than the sum of its proper divisors (448200).

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

384138 is a wasteful number, since it uses less digits than its factorization.

384138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21349 (or 21346 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 384138 is about 619.7886736622. The cubic root of 384138 is about 72.6935297066.

The spelling of 384138 in words is "three hundred eighty-four thousand, one hundred thirty-eight".