491831824 has 40 divisors (see below), whose sum is σ = 1067663808. Its totient is φ = 217514880.

The previous prime is 491831819. The next prime is 491831827. The reversal of 491831824 is 428138194.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (491831827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31252 + ... + 44275.

Almost surely, 2^491831824 is an apocalyptic number.

491831824 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

491831824 is an abundant number, since it is smaller than the sum of its proper divisors (575831984).

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

491831824 is a wasteful number, since it uses less digits than its factorization.

491831824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75583 (or 75577 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 491831824 is about 22177.2817089922. The cubic root of 491831824 is about 789.3547174199.

The spelling of 491831824 in words is "four hundred ninety-one million, eight hundred thirty-one thousand, eight hundred twenty-four".