9286640 has 80 divisors (see below), whose sum is σ = 24078816. Its totient is φ = 3302400.

The previous prime is 9286633. The next prime is 9286643. The reversal of 9286640 is 466829.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 9286640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9286643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53594 + ... + 53766.

Almost surely, 2^9286640 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 9286640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12039408).

9286640 is an abundant number, since it is smaller than the sum of its proper divisors (14792176).

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

9286640 is a wasteful number, since it uses less digits than its factorization.

9286640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 9286640 is about 3047.3988908576. The cubic root of 9286640 is about 210.1936233865.

The spelling of 9286640 in words is "nine million, two hundred eighty-six thousand, six hundred forty".