385215 has 16 divisors (see below), whose sum is σ = 627936. Its totient is φ = 201600.

The previous prime is 385199. The next prime is 385223. The reversal of 385215 is 512583.

It is not a de Polignac number, because 385215 - 2⁴ = 385199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 705 + ... + 1125.

It is an arithmetic number, because the mean of its divisors is an integer number (39246).

2³⁸⁵²¹⁵ is an apocalyptic number.

385215 is a deficient number, since it is larger than the sum of its proper divisors (242721).

385215 is a wasteful number, since it uses less digits than its factorization.

385215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490.

The product of its digits is 1200, while the sum is 24.

The square root of 385215 is about 620.6569100558. The cubic root of 385215 is about 72.7614027780.

Adding to 385215 its reverse (512583), we get a palindrome (897798).

It can be divided in two parts, 38 and 5215, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 385215 in words is "three hundred eighty-five thousand, two hundred fifteen".