381284 has 12 divisors (see below), whose sum is σ = 672000. Its totient is φ = 189288.

The previous prime is 381253. The next prime is 381287. The reversal of 381284 is 482183.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 381284.

It is not an unprimeable number, because it can be changed into a prime (381287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557 + ... + 1035.

It is an arithmetic number, because the mean of its divisors is an integer number (56000).

2³⁸¹²⁸⁴ is an apocalyptic number.

It is an amenable number.

381284 is a deficient number, since it is larger than the sum of its proper divisors (290716).

381284 is a wasteful number, since it uses less digits than its factorization.

381284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 680 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

The square root of 381284 is about 617.4819835428. The cubic root of 381284 is about 72.5130535354.

The spelling of 381284 in words is "three hundred eighty-one thousand, two hundred eighty-four".