9113640 has 64 divisors (see below), whose sum is σ = 27561600. Its totient is φ = 2410752.

The previous prime is 9113639. The next prime is 9113719. The reversal of 9113640 is 463119.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 9113640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20541 + ... + 20979.

It is an arithmetic number, because the mean of its divisors is an integer number (430650).

Almost surely, 2^9113640 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 9113640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13780800).

9113640 is an abundant number, since it is smaller than the sum of its proper divisors (18447960).

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

9113640 is a wasteful number, since it uses less digits than its factorization.

9113640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 622 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 9113640 is about 3018.8805872376. The cubic root of 9113640 is about 208.8802072914.

Adding to 9113640 its reverse (463119), we get a palindrome (9576759).

It can be divided in two parts, 91 and 13640, that added together give a palindrome (13731).

The spelling of 9113640 in words is "nine million, one hundred thirteen thousand, six hundred forty".