14215684 has 72 divisors (see below), whose sum is σ = 31169880. Its totient is φ = 5644800.

The previous prime is 14215681. The next prime is 14215693. The reversal of 14215684 is 48651241.

It can be written as a sum of positive squares in 4 ways, for example, as 451584 + 13764100 = 672^2 + 3710^2 .

It is not an unprimeable number, because it can be changed into a prime (14215681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 233014 + ... + 233074.

It is an arithmetic number, because the mean of its divisors is an integer number (432915).

Almost surely, 2^14215684 is an apocalyptic number.

14215684 is a gapful number since it is divisible by the number (14) 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 14215684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15584940).

14215684 is an abundant number, since it is smaller than the sum of its proper divisors (16954196).

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

14215684 is a wasteful number, since it uses less digits than its factorization.

14215684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 140 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 14215684 is about 3770.3692126899. The cubic root of 14215684 is about 242.2456127131.

It can be divided in two parts, 1421 and 5684, that multiplied together give a square (8076964 = 2842²).

The spelling of 14215684 in words is "fourteen million, two hundred fifteen thousand, six hundred eighty-four".