14311728 has 80 divisors (see below), whose sum is σ = 41688800. Its totient is φ = 4758912.

The previous prime is 14311721. The next prime is 14311751. The reversal of 14311728 is 82711341.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (14311721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34788 + ... + 35196.

It is an arithmetic number, because the mean of its divisors is an integer number (521110).

Almost surely, 2^14311728 is an apocalyptic number.

14311728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14311728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20844400).

14311728 is an abundant number, since it is smaller than the sum of its proper divisors (27377072).

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

14311728 is an frugal number, since it uses more digits than its factorization.

14311728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 414 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 14311728 is about 3783.0844558376. The cubic root of 14311728 is about 242.7899419272.

The spelling of 14311728 in words is "fourteen million, three hundred eleven thousand, seven hundred twenty-eight".