491060320 has 96 divisors (see below), whose sum is σ = 1229921280. Its totient is φ = 184757760.

The previous prime is 491060279. The next prime is 491060329. The reversal of 491060320 is 23060194.

It is a super-2 number, since 2×491060320² = 482280475757004800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491060329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495025 + ... + 496015.

It is an arithmetic number, because the mean of its divisors is an integer number (12811680).

Almost surely, 2^491060320 is an apocalyptic number.

491060320 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 491060320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (614960640).

491060320 is an abundant number, since it is smaller than the sum of its proper divisors (738860960).

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

491060320 is a wasteful number, since it uses less digits than its factorization.

491060320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188 (or 1180 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 491060320 is about 22159.8808661058. The cubic root of 491060320 is about 788.9417652700.

The spelling of 491060320 in words is "four hundred ninety-one million, sixty thousand, three hundred twenty".