13911128 has 48 divisors (see below), whose sum is σ = 32781840. Its totient is φ = 5417280.

The previous prime is 13911127. The next prime is 13911133. The reversal of 13911128 is 82111931.

13911128 is nontrivially palindromic in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 13911097 and 13911106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13911127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5750 + ... + 7802.

It is an arithmetic number, because the mean of its divisors is an integer number (682955).

Almost surely, 2^13911128 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 13911128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16390920).

13911128 is an abundant number, since it is smaller than the sum of its proper divisors (18870712).

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

13911128 is a wasteful number, since it uses less digits than its factorization.

13911128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088 (or 2073 counting only the distinct ones).

The product of its digits is 432, while the sum is 26.

The square root of 13911128 is about 3729.7624589242. The cubic root of 13911128 is about 240.5031573619.

It can be divided in two parts, 1391112 and 8, that multiplied together give a square (11128896 = 3336²).

The spelling of 13911128 in words is "thirteen million, nine hundred eleven thousand, one hundred twenty-eight".