491824424 has 192 divisors, whose sum is σ = 1267862400. Its totient is φ = 173560320.

The previous prime is 491824423. The next prime is 491824429. The reversal of 491824424 is 424428194.

It is a Harshad number since it is a multiple of its sum of digits (38).

Its product of digits (73728) is a multiple of the sum of its prime factors (144).

It is not an unprimeable number, because it can be changed into a prime (491824423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13292534 + ... + 13292570.

It is an arithmetic number, because the mean of its divisors is an integer number (6603450).

Almost surely, 2^491824424 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 491824424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (633931200).

491824424 is an abundant number, since it is smaller than the sum of its proper divisors (776037976).

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

491824424 is a wasteful number, since it uses less digits than its factorization.

491824424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 109 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 491824424 is about 22177.1148709655. The cubic root of 491824424 is about 789.3507585774.

The spelling of 491824424 in words is "four hundred ninety-one million, eight hundred twenty-four thousand, four hundred twenty-four".