1998882 has 12 divisors (see below), whose sum is σ = 4330950. Its totient is φ = 666288.

The previous prime is 1998881. The next prime is 1998917. The reversal of 1998882 is 2888991.

It can be written as a sum of positive squares in only one way, i.e., 1535121 + 463761 = 1239^2 + 681^2 .

It is not an unprimeable number, because it can be changed into a prime (1998881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55507 + ... + 55542.

2^1998882 is an apocalyptic number.

1998882 is an abundant number, since it is smaller than the sum of its proper divisors (2332068).

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

1998882 is a wasteful number, since it uses less digits than its factorization.

1998882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111057 (or 111054 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 1998882 is about 1413.8182344276. The cubic root of 1998882 is about 125.9686240848.

The spelling of 1998882 in words is "one million, nine hundred ninety-eight thousand, eight hundred eighty-two".