491275260 has 96 divisors (see below), whose sum is σ = 1746769920. Its totient is φ = 112290624.

The previous prime is 491275247. The next prime is 491275261. The reversal of 491275260 is 62572194.

491275260 is a `hidden beast` number, since 4 + 9 + 127 + 526 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491275261) 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, 61204 + ... + 68763.

It is an arithmetic number, because the mean of its divisors is an integer number (18195520).

Almost surely, 2^491275260 is an apocalyptic number.

It is an amenable number.

491275260 is an abundant number, since it is smaller than the sum of its proper divisors (1255494660).

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

491275260 is a wasteful number, since it uses less digits than its factorization.

491275260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129992 (or 129984 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 491275260 is about 22164.7300908448. The cubic root of 491275260 is about 789.0568566351.

The spelling of 491275260 in words is "four hundred ninety-one million, two hundred seventy-five thousand, two hundred sixty".