491843072 has 80 divisors (see below), whose sum is σ = 1153780320. Its totient is φ = 205037568.

The previous prime is 491843069. The next prime is 491843083. The reversal of 491843072 is 270348194.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130754 + ... + 134462.

It is an arithmetic number, because the mean of its divisors is an integer number (14422254).

Almost surely, 2^491843072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491843072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (576890160).

491843072 is an abundant number, since it is smaller than the sum of its proper divisors (661937248).

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

491843072 is an equidigital number, since it uses as much as digits as its factorization.

491843072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771 (or 3755 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 491843072 is about 22177.5353003890. The cubic root of 491843072 is about 789.3607347845.

The spelling of 491843072 in words is "four hundred ninety-one million, eight hundred forty-three thousand, seventy-two".