1989088 has 24 divisors (see below), whose sum is σ = 3984120. Its totient is φ = 977280.

The previous prime is 1989077. The next prime is 1989101. The reversal of 1989088 is 8809891.

It is a congruent number.

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, 1443 + ... + 2461.

It is an arithmetic number, because the mean of its divisors is an integer number (166005).

2^1989088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1989088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1992060).

1989088 is an abundant number, since it is smaller than the sum of its proper divisors (1995032).

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

1989088 is a wasteful number, since it uses less digits than its factorization.

1989088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090 (or 1082 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 1989088 is about 1410.3503110930. The cubic root of 1989088 is about 125.7625493551.

It can be divided in two parts, 198908 and 8, that added together give a square (198916 = 446²).

The spelling of 1989088 in words is "one million, nine hundred eighty-nine thousand, eighty-eight".