1998892 has 12 divisors (see below), whose sum is σ = 3997840. Its totient is φ = 856656.

The previous prime is 1998881. The next prime is 1998917. The reversal of 1998892 is 2988991.

It is a happy number.

1998892 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35667 + ... + 35722.

2^1998892 is an apocalyptic number.

It is an amenable number.

1998892 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1998892 is a wasteful number, since it uses less digits than its factorization.

1998892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71400 (or 71398 counting only the distinct ones).

The product of its digits is 93312, while the sum is 46.

The square root of 1998892 is about 1413.8217709457. The cubic root of 1998892 is about 125.9688341496.

Subtracting 1998892 from its reverse (2988991), we obtain a palindrome (990099).

The spelling of 1998892 in words is "one million, nine hundred ninety-eight thousand, eight hundred ninety-two".