384215 has 16 divisors (see below), whose sum is σ = 520128. Its totient is φ = 270336.

The previous prime is 384203. The next prime is 384227. The reversal of 384215 is 512483.

It is an interprime number because it is at equal distance from previous prime (384203) and next prime (384227).

It is a cyclic number.

It is not a de Polignac number, because 384215 - 2⁶ = 384151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

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, 1367 + ... + 1623.

It is an arithmetic number, because the mean of its divisors is an integer number (32508).

2³⁸⁴²¹⁵ is an apocalyptic number.

384215 is a deficient number, since it is larger than the sum of its proper divisors (135913).

384215 is a wasteful number, since it uses less digits than its factorization.

384215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298.

The product of its digits is 960, while the sum is 23.

The square root of 384215 is about 619.8507884967. The cubic root of 384215 is about 72.6983864923.

Adding to 384215 its reverse (512483), we get a palindrome (896698).

It can be divided in two parts, 3842 and 15, that multiplied together give a triangular number (57630 = T₃₃₉).

The spelling of 384215 in words is "three hundred eighty-four thousand, two hundred fifteen".