9168640 has 144 divisors (see below), whose sum is σ = 25754400. Its totient is φ = 3096576.

The previous prime is 9168631. The next prime is 9168647. The reversal of 9168640 is 468619.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9168596 and 9168605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9168647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316146 + ... + 316174.

It is an arithmetic number, because the mean of its divisors is an integer number (178850).

Almost surely, 2^9168640 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 9168640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12877200).

9168640 is an abundant number, since it is smaller than the sum of its proper divisors (16585760).

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

9168640 is a wasteful number, since it uses less digits than its factorization.

9168640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 9168640 is about 3027.9762218353. The cubic root of 9168640 is about 209.2995559477.

The spelling of 9168640 in words is "nine million, one hundred sixty-eight thousand, six hundred forty".