491130 has 64 divisors (see below), whose sum is σ = 1399680. Its totient is φ = 122112.

The previous prime is 491129. The next prime is 491137. The reversal of 491130 is 31194.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (491137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4537 + ... + 4643.

It is an arithmetic number, because the mean of its divisors is an integer number (21870).

2⁴⁹¹¹³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699840).

491130 is an abundant number, since it is smaller than the sum of its proper divisors (908550).

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

491130 is a wasteful number, since it uses less digits than its factorization.

491130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 491130 is about 700.8066780504. The cubic root of 491130 is about 78.8979079669.

The spelling of 491130 in words is "four hundred ninety-one thousand, one hundred thirty".