491328760 has 64 divisors (see below), whose sum is σ = 1242319680. Its totient is φ = 173521920.

The previous prime is 491328697. The next prime is 491328767. The reversal of 491328760 is 67823194.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491328767) 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, 8581 + ... + 32500.

It is an arithmetic number, because the mean of its divisors is an integer number (19411245).

Almost surely, 2^491328760 is an apocalyptic number.

491328760 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

491328760 is an abundant number, since it is smaller than the sum of its proper divisors (750990920).

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

491328760 is a wasteful number, since it uses less digits than its factorization.

491328760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41128 (or 41124 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 491328760 is about 22165.9369303443. The cubic root of 491328760 is about 789.0854984258.

The spelling of 491328760 in words is "four hundred ninety-one million, three hundred twenty-eight thousand, seven hundred sixty".