491912260 has 96 divisors (see below), whose sum is σ = 1238130432. Its totient is φ = 160634880.

The previous prime is 491912257. The next prime is 491912263. The reversal of 491912260 is 62219194.

It is an interprime number because it is at equal distance from previous prime (491912257) and next prime (491912263).

It is not an unprimeable number, because it can be changed into a prime (491912263) 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, 245824 + ... + 247816.

It is an arithmetic number, because the mean of its divisors is an integer number (12897192).

Almost surely, 2^491912260 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 491912260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (619065216).

491912260 is an abundant number, since it is smaller than the sum of its proper divisors (746218172).

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

491912260 is a wasteful number, since it uses less digits than its factorization.

491912260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2093 (or 2091 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 491912260 is about 22179.0951122899. The cubic root of 491912260 is about 789.3977464067.

The spelling of 491912260 in words is "four hundred ninety-one million, nine hundred twelve thousand, two hundred sixty".