491730270 has 64 divisors (see below), whose sum is σ = 1261391616. Its totient is φ = 122247680.

The previous prime is 491730257. The next prime is 491730299. The reversal of 491730270 is 72037194.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50065 + ... + 59075.

It is an arithmetic number, because the mean of its divisors is an integer number (19709244).

Almost surely, 2^491730270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491730270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (630695808).

491730270 is an abundant number, since it is smaller than the sum of its proper divisors (769661346).

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

491730270 is a wasteful number, since it uses less digits than its factorization.

491730270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9145.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 491730270 is about 22174.9919954890. The cubic root of 491730270 is about 789.3003847239.

The spelling of 491730270 in words is "four hundred ninety-one million, seven hundred thirty thousand, two hundred seventy".