384538 has 24 divisors (see below), whose sum is σ = 727776. Its totient is φ = 149160.

The previous prime is 384533. The next prime is 384547. The reversal of 384538 is 835483.

It is not an unprimeable number, because it can be changed into a prime (384533) by changing a digit.

384538 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1581 + ... + 1807.

It is an arithmetic number, because the mean of its divisors is an integer number (30324).

2³⁸⁴⁵³⁸ is an apocalyptic number.

384538 is a deficient number, since it is larger than the sum of its proper divisors (343238).

384538 is a wasteful number, since it uses less digits than its factorization.

384538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 247 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 384538 is about 620.1112803360. Note that the first 3 decimals coincide. The cubic root of 384538 is about 72.7187526951.

It can be divided in two parts, 3845 and 38, that added together give a palindrome (3883).

The spelling of 384538 in words is "three hundred eighty-four thousand, five hundred thirty-eight".