1988532 has 72 divisors (see below), whose sum is σ = 6196736. Its totient is φ = 523584.

The previous prime is 1988531. The next prime is 1988533. The reversal of 1988532 is 2358891.

It is an interprime number because it is at equal distance from previous prime (1988531) and next prime (1988533).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2973 + ... + 3579.

2^1988532 is an apocalyptic number.

1988532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1988532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3098368).

1988532 is an abundant number, since it is smaller than the sum of its proper divisors (4208204).

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

1988532 is a wasteful number, since it uses less digits than its factorization.

1988532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 632 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 1988532 is about 1410.1531831684. The cubic root of 1988532 is about 125.7508303339.

The spelling of 1988532 in words is "one million, nine hundred eighty-eight thousand, five hundred thirty-two".