11003904 has 96 divisors (see below), whose sum is σ = 32760000. Its totient is φ = 3649536.

The previous prime is 11003903. The next prime is 11003917. The reversal of 11003904 is 40930011.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11003903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55197 + ... + 55395.

It is an arithmetic number, because the mean of its divisors is an integer number (341250).

Almost surely, 2^11003904 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 11003904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16380000).

11003904 is an abundant number, since it is smaller than the sum of its proper divisors (21756096).

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

11003904 is an equidigital number, since it uses as much as digits as its factorization.

11003904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 11003904 is about 3317.2132882888. The cubic root of 11003904 is about 222.4243163034.

Adding to 11003904 its reverse (40930011), we get a palindrome (51933915).

The spelling of 11003904 in words is "eleven million, three thousand, nine hundred four".