491284 has 12 divisors (see below), whose sum is σ = 864864. Its totient is φ = 244184.

The previous prime is 491279. The next prime is 491297. The reversal of 491284 is 482194.

It is a congruent number.

It is an unprimeable number.

491284 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 819 + ... + 1285.

It is an arithmetic number, because the mean of its divisors is an integer number (72072).

2⁴⁹¹²⁸⁴ is an apocalyptic number.

It is an amenable number.

491284 is a deficient number, since it is larger than the sum of its proper divisors (373580).

491284 is a wasteful number, since it uses less digits than its factorization.

491284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 732 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 491284 is about 700.9165428209. The cubic root of 491284 is about 78.9061535829.

The spelling of 491284 in words is "four hundred ninety-one thousand, two hundred eighty-four".