491266284 has 12 divisors (see below), whose sum is σ = 1146288024. Its totient is φ = 163755424.

The previous prime is 491266283. The next prime is 491266309. The reversal of 491266284 is 482662194.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (491266283) 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, 20469417 + ... + 20469440.

It is an arithmetic number, because the mean of its divisors is an integer number (95524002).

Almost surely, 2^491266284 is an apocalyptic number.

It is an amenable number.

491266284 is an abundant number, since it is smaller than the sum of its proper divisors (655021740).

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

491266284 is a wasteful number, since it uses less digits than its factorization.

491266284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40938864 (or 40938862 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 491266284 is about 22164.5276060646. The cubic root of 491266284 is about 789.0520510349.

The spelling of 491266284 in words is "four hundred ninety-one million, two hundred sixty-six thousand, two hundred eighty-four".