384504 has 32 divisors (see below), whose sum is σ = 989520. Its totient is φ = 124416.

The previous prime is 384497. The next prime is 384509. The reversal of 384504 is 405483.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384509) by changing a digit.

384504 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672 + ... + 1104.

2³⁸⁴⁵⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 384504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494760).

384504 is an abundant number, since it is smaller than the sum of its proper divisors (605016).

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

384504 is a wasteful number, since it uses less digits than its factorization.

384504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 384504 is about 620.0838652957. The cubic root of 384504 is about 72.7166094215.

Adding to 384504 its reverse (405483), we get a palindrome (789987).

It can be divided in two parts, 384 and 504, that added together give a palindrome (888).

The spelling of 384504 in words is "three hundred eighty-four thousand, five hundred four".