491271032 has 64 divisors (see below), whose sum is σ = 1117981440. Its totient is φ = 197568000.

The previous prime is 491271019. The next prime is 491271097. The reversal of 491271032 is 230172194.

It is a junction number, because it is equal to n+sod(n) for n = 491270986 and 491271004.

It is a congruent number.

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, 466907 + ... + 467957.

It is an arithmetic number, because the mean of its divisors is an integer number (17468460).

Almost surely, 2^491271032 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 491271032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (558990720).

491271032 is an abundant number, since it is smaller than the sum of its proper divisors (626710408).

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

491271032 is a wasteful number, since it uses less digits than its factorization.

491271032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572 (or 1568 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 491271032 is about 22164.6347138860. The cubic root of 491271032 is about 789.0545930420.

The spelling of 491271032 in words is "four hundred ninety-one million, two hundred seventy-one thousand, thirty-two".