384636 has 48 divisors (see below), whose sum is σ = 1084160. Its totient is φ = 103680.

The previous prime is 384623. The next prime is 384641. The reversal of 384636 is 636483.

384636 = T₃₂₈ + T₃₂₉ + ... + T₃₃₄.

It is a congruent number.

It is an unprimeable 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 15 ways as a sum of consecutive naturals, for example, 1476 + ... + 1716.

2³⁸⁴⁶³⁶ 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 384636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (542080).

384636 is an abundant number, since it is smaller than the sum of its proper divisors (699524).

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

384636 is a wasteful number, since it uses less digits than its factorization.

384636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 272 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 384636 is about 620.1902933778. The cubic root of 384636 is about 72.7249296594.

The spelling of 384636 in words is "three hundred eighty-four thousand, six hundred thirty-six".