491667528 has 48 divisors (see below), whose sum is σ = 1351077840. Its totient is φ = 148989280.

The previous prime is 491667493. The next prime is 491667529. The reversal of 491667528 is 825766194.

It is not an unprimeable number, because it can be changed into a prime (491667529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81750 + ... + 87557.

It is an arithmetic number, because the mean of its divisors is an integer number (28147455).

Almost surely, 2^491667528 is an apocalyptic number.

It is an amenable number.

491667528 is an abundant number, since it is smaller than the sum of its proper divisors (859410312).

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

491667528 is a wasteful number, since it uses less digits than its factorization.

491667528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169338 (or 169323 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 491667528 is about 22173.5772486083. The cubic root of 491667528 is about 789.2668132084.

The spelling of 491667528 in words is "four hundred ninety-one million, six hundred sixty-seven thousand, five hundred twenty-eight".