491844528 has 160 divisors (see below), whose sum is σ = 1653227520. Its totient is φ = 137064960.

The previous prime is 491844523. The next prime is 491844533. The reversal of 491844528 is 825448194.

491844528 is a `hidden beast` number, since 49 + 1 + 84 + 4 + 528 = 666.

It is an interprime number because it is at equal distance from previous prime (491844523) and next prime (491844533).

It is a super-2 number, since 2×491844528² = 483822079447085568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (491844523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122001 + ... + 125967.

It is an arithmetic number, because the mean of its divisors is an integer number (10332672).

Almost surely, 2^491844528 is an apocalyptic number.

491844528 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491844528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (826613760).

491844528 is an abundant number, since it is smaller than the sum of its proper divisors (1161382992).

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

491844528 is a wasteful number, since it uses less digits than its factorization.

491844528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4032 (or 4020 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 491844528 is about 22177.5681263749. The cubic root of 491844528 is about 789.3615136970.

The spelling of 491844528 in words is "four hundred ninety-one million, eight hundred forty-four thousand, five hundred twenty-eight".