11013440 has 56 divisors (see below), whose sum is σ = 26529792. Its totient is φ = 4354560.

The previous prime is 11013439. The next prime is 11013473. The reversal of 11013440 is 4431011.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 40505 + ... + 40775.

Almost surely, 2^11013440 is an apocalyptic number.

11013440 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 11013440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13264896).

11013440 is an abundant number, since it is smaller than the sum of its proper divisors (15516352).

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

11013440 is a wasteful number, since it uses less digits than its factorization.

11013440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 405 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 11013440 is about 3318.6503280701. The cubic root of 11013440 is about 222.4885488362.

Adding to 11013440 its reverse (4431011), we get a palindrome (15444451).

The spelling of 11013440 in words is "eleven million, thirteen thousand, four hundred forty".