491016 has 32 divisors (see below), whose sum is σ = 1260000. Its totient is φ = 159360.

The previous prime is 491003. The next prime is 491039. The reversal of 491016 is 610194.

It is a junction number, because it is equal to n+sod(n) for n = 490983 and 491001.

It is an unprimeable number.

491016 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 735 + ... + 1233.

It is an arithmetic number, because the mean of its divisors is an integer number (39375).

2⁴⁹¹⁰¹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (630000).

491016 is an abundant number, since it is smaller than the sum of its proper divisors (768984).

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

491016 is a wasteful number, since it uses less digits than its factorization.

491016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 491016 is about 700.7253384886. The cubic root of 491016 is about 78.8918029591.

The spelling of 491016 in words is "four hundred ninety-one thousand, sixteen".