11003872 has 48 divisors (see below), whose sum is σ = 24216192. Its totient is φ = 4878720.

The previous prime is 11003857. The next prime is 11003893. The reversal of 11003872 is 27830011.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14773 + ... + 15499.

It is an arithmetic number, because the mean of its divisors is an integer number (504504).

Almost surely, 2^11003872 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 11003872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12108096).

11003872 is an abundant number, since it is smaller than the sum of its proper divisors (13212320).

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

11003872 is a wasteful number, since it uses less digits than its factorization.

11003872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 11003872 is about 3317.2084649597. The cubic root of 11003872 is about 222.4241006955.

Adding to 11003872 its reverse (27830011), we get a palindrome (38833883).

The spelling of 11003872 in words is "eleven million, three thousand, eight hundred seventy-two".