491373600 has 144 divisors (see below), whose sum is σ = 1630020672. Its totient is φ = 128527360.

The previous prime is 491373581. The next prime is 491373647. The reversal of 491373600 is 6373194.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125269 + ... + 129131.

It is an arithmetic number, because the mean of its divisors is an integer number (11319588).

Almost surely, 2^491373600 is an apocalyptic number.

491373600 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 491373600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (815010336).

491373600 is an abundant number, since it is smaller than the sum of its proper divisors (1138647072).

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

491373600 is a wasteful number, since it uses less digits than its factorization.

491373600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939 (or 3926 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 491373600 is about 22166.9483691373. The cubic root of 491373600 is about 789.1095023924.

The spelling of 491373600 in words is "four hundred ninety-one million, three hundred seventy-three thousand, six hundred".