1987732 has 12 divisors (see below), whose sum is σ = 3488436. Its totient is φ = 991040.

The previous prime is 1987709. The next prime is 1987789. The reversal of 1987732 is 2377891.

It can be written as a sum of positive squares in 2 ways, for example, as 148996 + 1838736 = 386^2 + 1356^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1987691 and 1987700.

It is a congruent 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, 2232 + ... + 2992.

It is an arithmetic number, because the mean of its divisors is an integer number (290703).

2^1987732 is an apocalyptic number.

It is an amenable number.

1987732 is a deficient number, since it is larger than the sum of its proper divisors (1500704).

1987732 is a wasteful number, since it uses less digits than its factorization.

1987732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418 (or 1416 counting only the distinct ones).

The product of its digits is 21168, while the sum is 37.

The square root of 1987732 is about 1409.8694975068. The cubic root of 1987732 is about 125.7339645994.

The spelling of 1987732 in words is "one million, nine hundred eighty-seven thousand, seven hundred thirty-two".