9987072 has 44 divisors (see below), whose sum is σ = 26627376. Its totient is φ = 3328000.

The previous prime is 9987071. The next prime is 9987091. The reversal of 9987072 is 2707899.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (9987071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1447 + ... + 4697.

Almost surely, 2^9987072 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 9987072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13313688).

9987072 is an abundant number, since it is smaller than the sum of its proper divisors (16640304).

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

9987072 is a wasteful number, since it uses less digits than its factorization.

9987072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274 (or 3256 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 9987072 is about 3160.2329028095. The cubic root of 9987072 is about 215.3505871936.

The spelling of 9987072 in words is "nine million, nine hundred eighty-seven thousand, seventy-two".