384638 has 4 divisors (see below), whose sum is σ = 576960. Its totient is φ = 192318.

The previous prime is 384623. The next prime is 384641. The reversal of 384638 is 836483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 836483 = 839 ⋅997.

It is a congruent number.

It is an unprimeable number.

384638 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, 96158 + ... + 96161.

It is an arithmetic number, because the mean of its divisors is an integer number (144240).

2³⁸⁴⁶³⁸ is an apocalyptic number.

384638 is a deficient number, since it is larger than the sum of its proper divisors (192322).

384638 is a wasteful number, since it uses less digits than its factorization.

384638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192321.

The product of its digits is 13824, while the sum is 32.

The square root of 384638 is about 620.1919057840. The cubic root of 384638 is about 72.7250557089.

The spelling of 384638 in words is "three hundred eighty-four thousand, six hundred thirty-eight".