9639264 has 96 divisors (see below), whose sum is σ = 27095040. Its totient is φ = 2995200.

The previous prime is 9639247. The next prime is 9639283. The reversal of 9639264 is 4629369.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

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, 121977 + ... + 122055.

It is an arithmetic number, because the mean of its divisors is an integer number (282240).

Almost surely, 2^9639264 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 9639264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13547520).

9639264 is an abundant number, since it is smaller than the sum of its proper divisors (17455776).

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

9639264 is a wasteful number, since it uses less digits than its factorization.

9639264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 156 counting only the distinct ones).

The product of its digits is 69984, while the sum is 39.

The square root of 9639264 is about 3104.7164121704. The cubic root of 9639264 is about 212.8210712736.

The spelling of 9639264 in words is "nine million, six hundred thirty-nine thousand, two hundred sixty-four".