491867376 has 320 divisors, whose sum is σ = 1769886720. Its totient is φ = 113541120.

The previous prime is 491867329. The next prime is 491867393. The reversal of 491867376 is 673768194.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1393216 + ... + 1393568.

It is an arithmetic number, because the mean of its divisors is an integer number (5530896).

Almost surely, 2^491867376 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 491867376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (884943360).

491867376 is an abundant number, since it is smaller than the sum of its proper divisors (1278019344).

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

491867376 is a wasteful number, since it uses less digits than its factorization.

491867376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424 (or 418 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 51.

The square root of 491867376 is about 22178.0832354827. The cubic root of 491867376 is about 789.3737364297.

The spelling of 491867376 in words is "four hundred ninety-one million, eight hundred sixty-seven thousand, three hundred seventy-six".