491432208 has 80 divisors (see below), whose sum is σ = 1304398656. Its totient is φ = 159344640.

The previous prime is 491432159. The next prime is 491432239. The reversal of 491432208 is 802234194.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 942988 + ... + 943508.

Almost surely, 2^491432208 is an apocalyptic number.

491432208 is a gapful number since it is divisible by the number (48) 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 491432208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652199328).

491432208 is an abundant number, since it is smaller than the sum of its proper divisors (812966448).

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

491432208 is a wasteful number, since it uses less digits than its factorization.

491432208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032 (or 1026 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 491432208 is about 22168.2702978830. The cubic root of 491432208 is about 789.1408745100.

The spelling of 491432208 in words is "four hundred ninety-one million, four hundred thirty-two thousand, two hundred eight".