11403872 has 24 divisors (see below), whose sum is σ = 23773176. Its totient is φ = 5366272.

The previous prime is 11403859. The next prime is 11403913. The reversal of 11403872 is 27830411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9938 + ... + 11025.

It is an arithmetic number, because the mean of its divisors is an integer number (990549).

Almost surely, 2^11403872 is an apocalyptic number.

It is an amenable number.

11403872 is an abundant number, since it is smaller than the sum of its proper divisors (12369304).

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

11403872 is a wasteful number, since it uses less digits than its factorization.

11403872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20990 (or 20982 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 11403872 is about 3376.9619482606. The cubic root of 11403872 is about 225.0871892544.

The spelling of 11403872 in words is "eleven million, four hundred three thousand, eight hundred seventy-two".