1987328 has 36 divisors (see below), whose sum is σ = 4537680. Its totient is φ = 850944.

The previous prime is 1987313. The next prime is 1987333. The reversal of 1987328 is 8237891.

1987328 is nontrivially palindromic in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 1987291 and 1987300.

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, 1238 + ... + 2346.

2^1987328 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 1987328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2268840).

1987328 is an abundant number, since it is smaller than the sum of its proper divisors (2550352).

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

1987328 is an equidigital number, since it uses as much as digits as its factorization.

1987328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132 (or 1118 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 1987328 is about 1409.7262145537. The cubic root of 1987328 is about 125.7254456838.

The spelling of 1987328 in words is "one million, nine hundred eighty-seven thousand, three hundred twenty-eight".