491000208 has 20 divisors (see below), whose sum is σ = 1268417328. Its totient is φ = 163666720.

The previous prime is 491000203. The next prime is 491000219. The reversal of 491000208 is 802000194.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (491000203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5114538 + ... + 5114633.

Almost surely, 2^491000208 is an apocalyptic number.

491000208 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

491000208 is an abundant number, since it is smaller than the sum of its proper divisors (777417120).

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

491000208 is a wasteful number, since it uses less digits than its factorization.

491000208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10229182 (or 10229176 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 491000208 is about 22158.5244996141. The cubic root of 491000208 is about 788.9095718030.

The spelling of 491000208 in words is "four hundred ninety-one million, two hundred eight", and thus it is an aban number.