491111424 has 220 divisors, whose sum is σ = 1521788928. Its totient is φ = 157593600.

The previous prime is 491111377. The next prime is 491111431. The reversal of 491111424 is 424111194.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2571169 + ... + 2571359.

Almost surely, 2^491111424 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 491111424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (760894464).

491111424 is an abundant number, since it is smaller than the sum of its proper divisors (1030677504).

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

491111424 is a wasteful number, since it uses less digits than its factorization.

491111424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 227 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 491111424 is about 22161.0339108987. The cubic root of 491111424 is about 788.9691323638.

The spelling of 491111424 in words is "four hundred ninety-one million, one hundred eleven thousand, four hundred twenty-four".