7987284 has 36 divisors (see below), whose sum is σ = 20360704. Its totient is φ = 2639952.

The previous prime is 7987253. The next prime is 7987289. The reversal of 7987284 is 4827897.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7987289) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3699 + ... + 5445.

Almost surely, 2^7987284 is an apocalyptic number.

It is an amenable number.

7987284 is an abundant number, since it is smaller than the sum of its proper divisors (12373420).

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

7987284 is a wasteful number, since it uses less digits than its factorization.

7987284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884 (or 1879 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 7987284 is about 2826.1783383219. The cubic root of 7987284 is about 199.8939771390.

The spelling of 7987284 in words is "seven million, nine hundred eighty-seven thousand, two hundred eighty-four".