384478 has 4 divisors (see below), whose sum is σ = 576720. Its totient is φ = 192238.

The previous prime is 384473. The next prime is 384479. The reversal of 384478 is 874483.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384473) by changing a digit.

384478 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 as a sum of consecutive naturals, namely, 96118 + ... + 96121.

It is an arithmetic number, because the mean of its divisors is an integer number (144180).

2³⁸⁴⁴⁷⁸ is an apocalyptic number.

384478 is a deficient number, since it is larger than the sum of its proper divisors (192242).

384478 is a wasteful number, since it uses less digits than its factorization.

384478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192241.

The product of its digits is 21504, while the sum is 34.

The square root of 384478 is about 620.0629000351. The cubic root of 384478 is about 72.7149703623.

The spelling of 384478 in words is "three hundred eighty-four thousand, four hundred seventy-eight".