491434672 has 20 divisors (see below), whose sum is σ = 952673400. Its totient is φ = 245583488.

The previous prime is 491434637. The next prime is 491434711. The reversal of 491434672 is 276434194.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26268 + ... + 40900.

It is an arithmetic number, because the mean of its divisors is an integer number (47633670).

Almost surely, 2^491434672 is an apocalyptic number.

It is an amenable number.

491434672 is a deficient number, since it is larger than the sum of its proper divisors (461238728).

491434672 is a wasteful number, since it uses less digits than its factorization.

491434672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16740 (or 16734 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 491434672 is about 22168.3258727401. The cubic root of 491434672 is about 789.1421934033.

The spelling of 491434672 in words is "four hundred ninety-one million, four hundred thirty-four thousand, six hundred seventy-two".