11320440 has 64 divisors (see below), whose sum is σ = 35143200. Its totient is φ = 2913792.

The previous prime is 11320433. The next prime is 11320457. The reversal of 11320440 is 4402311.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

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, 1854 + ... + 5106.

Almost surely, 2^11320440 is an apocalyptic number.

11320440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11320440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17571600).

11320440 is an abundant number, since it is smaller than the sum of its proper divisors (23822760).

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

11320440 is a wasteful number, since it uses less digits than its factorization.

11320440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3296 (or 3292 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 11320440 is about 3364.5861558296. The cubic root of 11320440 is about 224.5369241337.

Adding to 11320440 its reverse (4402311), we get a palindrome (15722751).

The spelling of 11320440 in words is "eleven million, three hundred twenty thousand, four hundred forty".