491224248 has 96 divisors (see below), whose sum is σ = 1469988000. Its totient is φ = 147400704.

The previous prime is 491224241. The next prime is 491224289. The reversal of 491224248 is 842422194.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491224241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19428 + ... + 36876.

It is an arithmetic number, because the mean of its divisors is an integer number (15312375).

Almost surely, 2^491224248 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 491224248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (734994000).

491224248 is an abundant number, since it is smaller than the sum of its proper divisors (978763752).

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

491224248 is a wasteful number, since it uses less digits than its factorization.

491224248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17501 (or 17494 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 491224248 is about 22163.5793138202. The cubic root of 491224248 is about 789.0295448849.

The spelling of 491224248 in words is "four hundred ninety-one million, two hundred twenty-four thousand, two hundred forty-eight".