17998047828 has 48 divisors (see below), whose sum is σ = 48166827520. Its totient is φ = 5805820800.

The previous prime is 17998047827. The next prime is 17998047833. The reversal of 17998047828 is 82874089971.

17998047828 is a `hidden beast` number, since 1 + 79 + 98 + 0 + 478 + 2 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17998047827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2684533 + ... + 2691228.

Almost surely, 2^17998047828 is an apocalyptic number.

17998047828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

17998047828 is an abundant number, since it is smaller than the sum of its proper divisors (30168779692).

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

17998047828 is a wasteful number, since it uses less digits than its factorization.

17998047828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5375805 (or 5375797 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 63.

The spelling of 17998047828 in words is "seventeen billion, nine hundred ninety-eight million, forty-seven thousand, eight hundred twenty-eight".