491443200 has 396 divisors, whose sum is σ = 1847867840. Its totient is φ = 129392640.

The previous prime is 491443181. The next prime is 491443201. The reversal of 491443200 is 2344194.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491443201) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 6220761 + ... + 6220839.

Almost surely, 2^491443200 is an apocalyptic number.

491443200 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 491443200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (923933920).

491443200 is an abundant number, since it is smaller than the sum of its proper divisors (1356424640).

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

491443200 is an equidigital number, since it uses as much as digits as its factorization.

491443200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 491443200 is about 22168.5182184105. The cubic root of 491443200 is about 789.1467581102.

Adding to 491443200 its reverse (2344194), we get a palindrome (493787394).

The spelling of 491443200 in words is "four hundred ninety-one million, four hundred forty-three thousand, two hundred".