1998008 has 16 divisors (see below), whose sum is σ = 3775680. Its totient is φ = 991168.

The previous prime is 1997999. The next prime is 1998019. The reversal of 1998008 is 8008991.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 185 + ... + 2007.

It is an arithmetic number, because the mean of its divisors is an integer number (235980).

2^1998008 is an apocalyptic number.

It is an amenable number.

1998008 is a deficient number, since it is larger than the sum of its proper divisors (1777672).

1998008 is a wasteful number, since it uses less digits than its factorization.

1998008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966 (or 1962 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 1998008 is about 1413.5091085663. The cubic root of 1998008 is about 125.9502617156.

The spelling of 1998008 in words is "one million, nine hundred ninety-eight thousand, eight".