1998368 has 24 divisors (see below), whose sum is σ = 3966732. Its totient is φ = 990976.

The previous prime is 1998349. The next prime is 1998371. The reversal of 1998368 is 8638991.

1998368 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1993744 + 4624 = 1412^2 + 68^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6146 + ... + 6462.

2^1998368 is an apocalyptic number.

It is an amenable number.

1998368 is a deficient number, since it is larger than the sum of its proper divisors (1968364).

1998368 is a wasteful number, since it uses less digits than its factorization.

1998368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524 (or 516 counting only the distinct ones).

The product of its digits is 93312, while the sum is 44.

The square root of 1998368 is about 1413.6364454838. The cubic root of 1998368 is about 125.9578258113.

The spelling of 1998368 in words is "one million, nine hundred ninety-eight thousand, three hundred sixty-eight".