987732 has 18 divisors (see below), whose sum is σ = 2496858. Its totient is φ = 329232.

The previous prime is 987713. The next prime is 987739. The reversal of 987732 is 237789.

It can be written as a sum of positive squares in only one way, i.e., 853776 + 133956 = 924^2 + 366^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×987732² = 1951229007648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 27437 = 987732 / (9 + 8 + 7 + 7 + 3 + 2).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13683 + ... + 13754.

2⁹⁸⁷⁷³² is an apocalyptic number.

It is an amenable number.

987732 is an abundant number, since it is smaller than the sum of its proper divisors (1509126).

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

987732 is a wasteful number, since it uses less digits than its factorization.

987732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27447 (or 27442 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 987732 is about 993.8470707307. The cubic root of 987732 is about 99.5893829105.

The spelling of 987732 in words is "nine hundred eighty-seven thousand, seven hundred thirty-two".