491571260 has 12 divisors (see below), whose sum is σ = 1032299688. Its totient is φ = 196628496.

The previous prime is 491571253. The next prime is 491571277. The reversal of 491571260 is 62175194.

It is a self number, because there is not a number n which added to its sum of digits gives 491571260.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12289262 + ... + 12289301.

It is an arithmetic number, because the mean of its divisors is an integer number (86024974).

Almost surely, 2^491571260 is an apocalyptic number.

It is an amenable number.

491571260 is an abundant number, since it is smaller than the sum of its proper divisors (540728428).

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

491571260 is a wasteful number, since it uses less digits than its factorization.

491571260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24578572 (or 24578570 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 491571260 is about 22171.4063604454. The cubic root of 491571260 is about 789.2152973006.

The spelling of 491571260 in words is "four hundred ninety-one million, five hundred seventy-one thousand, two hundred sixty".