385284 has 24 divisors (see below), whose sum is σ = 911008. Its totient is φ = 126720.

The previous prime is 385279. The next prime is 385289. The reversal of 385284 is 482583.

It is an interprime number because it is at equal distance from previous prime (385279) and next prime (385289).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (385289) by changing a digit.

385284 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 999 + ... + 1329.

2³⁸⁵²⁸⁴ is an apocalyptic number.

It is an amenable number.

385284 is an abundant number, since it is smaller than the sum of its proper divisors (525724).

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

385284 is a wasteful number, since it uses less digits than its factorization.

385284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435 (or 433 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 385284 is about 620.7124938327. The cubic root of 385284 is about 72.7657468777.

The spelling of 385284 in words is "three hundred eighty-five thousand, two hundred eighty-four".