491100800 has 48 divisors (see below), whose sum is σ = 1213180350. Its totient is φ = 196439040.

The previous prime is 491100793. The next prime is 491100817. The reversal of 491100800 is 8001194.

It can be written as a sum of positive squares in 3 ways, for example, as 464143936 + 26956864 = 21544^2 + 5192^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73535 + ... + 79934.

Almost surely, 2^491100800 is an apocalyptic number.

491100800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

491100800 is an abundant number, since it is smaller than the sum of its proper divisors (722079550).

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

491100800 is a wasteful number, since it uses less digits than its factorization.

491100800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153493 (or 153476 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 491100800 is about 22160.7942095946. The cubic root of 491100800 is about 788.9634431807.

Adding to 491100800 its reverse (8001194), we get a palindrome (499101994).

The spelling of 491100800 in words is "four hundred ninety-one million, one hundred thousand, eight hundred".