11003040 has 144 divisors (see below), whose sum is σ = 39076128. Its totient is φ = 2923776.

The previous prime is 11003021. The next prime is 11003059. The reversal of 11003040 is 4030011.

It is an interprime number because it is at equal distance from previous prime (11003021) and next prime (11003059).

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38739 + ... + 39021.

It is an arithmetic number, because the mean of its divisors is an integer number (271362).

Almost surely, 2^11003040 is an apocalyptic number.

11003040 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 11003040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19538064).

11003040 is an abundant number, since it is smaller than the sum of its proper divisors (28073088).

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

11003040 is an equidigital number, since it uses as much as digits as its factorization.

11003040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 11003040 is about 3317.0830559394. The cubic root of 11003040 is about 222.4184947440.

Adding to 11003040 its reverse (4030011), we get a palindrome (15033051).

The spelling of 11003040 in words is "eleven million, three thousand, forty".