1988892 has 36 divisors (see below), whose sum is σ = 5086536. Its totient is φ = 655200.

The previous prime is 1988891. The next prime is 1988897. The reversal of 1988892 is 2988891.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988891) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3363 + ... + 3909.

2^1988892 is an apocalyptic number.

1988892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1988892 is an abundant number, since it is smaller than the sum of its proper divisors (3097644).

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

1988892 is a wasteful number, since it uses less digits than its factorization.

1988892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658 (or 653 counting only the distinct ones).

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

The square root of 1988892 is about 1410.2808230987. The cubic root of 1988892 is about 125.7584184386.

Subtracting 1988892 from its reverse (2988891), we obtain a palindrome (999999).

It can be divided in two parts, 198889 and 2, that added together give a palindrome (198891).

The spelling of 1988892 in words is "one million, nine hundred eighty-eight thousand, eight hundred ninety-two".