168998880 has 48 divisors (see below), whose sum is σ = 532347984. Its totient is φ = 45066240.

The previous prime is 168998867. The next prime is 168998909. The reversal of 168998880 is 88899861.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 168998880.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 175561 + ... + 176520.

It is an arithmetic number, because the mean of its divisors is an integer number (11090583).

Almost surely, 2^168998880 is an apocalyptic number.

168998880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168998880 is an abundant number, since it is smaller than the sum of its proper divisors (363349104).

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

168998880 is a wasteful number, since it uses less digits than its factorization.

168998880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352099 (or 352091 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 57.

The square root of 168998880 is about 12999.9569230056. The cubic root of 168998880 is about 552.8762600185.

The spelling of 168998880 in words is "one hundred sixty-eight million, nine hundred ninety-eight thousand, eight hundred eighty".