491713272 has 24 divisors (see below), whose sum is σ = 1331723640. Its totient is φ = 163904400.

The previous prime is 491713249. The next prime is 491713283. The reversal of 491713272 is 272317194.

491713272 is a `hidden beast` number, since 491 + 71 + 32 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3414604 + ... + 3414747.

It is an arithmetic number, because the mean of its divisors is an integer number (55488485).

Almost surely, 2^491713272 is an apocalyptic number.

It is an amenable number.

491713272 is an abundant number, since it is smaller than the sum of its proper divisors (840010368).

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

491713272 is a wasteful number, since it uses less digits than its factorization.

491713272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6829363 (or 6829356 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 491713272 is about 22174.6087225908. The cubic root of 491713272 is about 789.2912898445.

The spelling of 491713272 in words is "four hundred ninety-one million, seven hundred thirteen thousand, two hundred seventy-two".