491852520 has 64 divisors (see below), whose sum is σ = 1639512000. Its totient is φ = 131160384.

The previous prime is 491852519. The next prime is 491852573. The reversal of 491852520 is 25258194.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226630 + ... + 228789.

It is an arithmetic number, because the mean of its divisors is an integer number (25617375).

Almost surely, 2^491852520 is an apocalyptic number.

491852520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

491852520 is an abundant number, since it is smaller than the sum of its proper divisors (1147659480).

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

491852520 is a wasteful number, since it uses less digits than its factorization.

491852520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455439 (or 455429 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 491852520 is about 22177.7483077070. The cubic root of 491852520 is about 789.3657891286.

The spelling of 491852520 in words is "four hundred ninety-one million, eight hundred fifty-two thousand, five hundred twenty".