11003172 has 12 divisors (see below), whose sum is σ = 25674096. Its totient is φ = 3667720.

The previous prime is 11003137. The next prime is 11003173. The reversal of 11003172 is 27130011.

11003172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×11003172³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11003173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458454 + ... + 458477.

It is an arithmetic number, because the mean of its divisors is an integer number (2139508).

Almost surely, 2^11003172 is an apocalyptic number.

11003172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11003172 is an abundant number, since it is smaller than the sum of its proper divisors (14670924).

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

11003172 is a wasteful number, since it uses less digits than its factorization.

11003172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916938 (or 916936 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 11003172 is about 3317.1029528792. The cubic root of 11003172 is about 222.4193841687.

Adding to 11003172 its reverse (27130011), we get a palindrome (38133183).

It can be divided in two parts, 11003 and 172, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 11003172 in words is "eleven million, three thousand, one hundred seventy-two".