9780288 has 112 divisors (see below), whose sum is σ = 31211520. Its totient is φ = 2640384.

The previous prime is 9780241. The next prime is 9780317. The reversal of 9780288 is 8820879.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25345 + ... + 25727.

Almost surely, 2^9780288 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 9780288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15605760).

9780288 is an abundant number, since it is smaller than the sum of its proper divisors (21431232).

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

9780288 is a wasteful number, since it uses less digits than its factorization.

9780288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 9780288 is about 3127.3452000059. The cubic root of 9780288 is about 213.8539195793.

The spelling of 9780288 in words is "nine million, seven hundred eighty thousand, two hundred eighty-eight".