491752216 has 16 divisors (see below), whose sum is σ = 922325040. Its totient is φ = 245798880.

The previous prime is 491752207. The next prime is 491752231. The reversal of 491752216 is 612257194.

It is a congruent number.

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, 24525 + ... + 39811.

It is an arithmetic number, because the mean of its divisors is an integer number (57645315).

Almost surely, 2^491752216 is an apocalyptic number.

It is an amenable number.

491752216 is a deficient number, since it is larger than the sum of its proper divisors (430572824).

491752216 is a wasteful number, since it uses less digits than its factorization.

491752216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19314 (or 19310 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 491752216 is about 22175.4868266742. The cubic root of 491752216 is about 789.3121267497.

The spelling of 491752216 in words is "four hundred ninety-one million, seven hundred fifty-two thousand, two hundred sixteen".