491802080 has 288 divisors, whose sum is σ = 1544417280. Its totient is φ = 144460800.

The previous prime is 491802079. The next prime is 491802089. The reversal of 491802080 is 80208194.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491802089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2574785 + ... + 2574975.

It is an arithmetic number, because the mean of its divisors is an integer number (5362560).

Almost surely, 2^491802080 is an apocalyptic number.

491802080 is a gapful number since it is divisible by the number (40) 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 491802080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (772208640).

491802080 is an abundant number, since it is smaller than the sum of its proper divisors (1052615200).

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

491802080 is a wasteful number, since it uses less digits than its factorization.

491802080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 491802080 is about 22176.6111026911. The cubic root of 491802080 is about 789.3388047720.

The spelling of 491802080 in words is "four hundred ninety-one million, eight hundred two thousand, eighty".