491604960 has 384 divisors, whose sum is σ = 1978712064. Its totient is φ = 99624960.

The previous prime is 491604947. The next prime is 491604979. The reversal of 491604960 is 69406194.

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, 1736979 + ... + 1737261.

It is an arithmetic number, because the mean of its divisors is an integer number (5152896).

Almost surely, 2^491604960 is an apocalyptic number.

491604960 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 491604960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (989356032).

491604960 is an abundant number, since it is smaller than the sum of its proper divisors (1487107104).

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

491604960 is a wasteful number, since it uses less digits than its factorization.

491604960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 491604960 is about 22172.1663352953. The cubic root of 491604960 is about 789.2333319512.

The spelling of 491604960 in words is "four hundred ninety-one million, six hundred four thousand, nine hundred sixty".