14686720 has 40 divisors (see below), whose sum is σ = 35219844. Its totient is φ = 5873664.

The previous prime is 14686699. The next prime is 14686729. The reversal of 14686720 is 2768641.

It can be written as a sum of positive squares in 2 ways, for example, as 12278016 + 2408704 = 3504^2 + 1552^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (14686729) 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, 309 + ... + 5428.

Almost surely, 2^14686720 is an apocalyptic number.

14686720 is a gapful number since it is divisible by the number (10) 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 14686720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17609922).

14686720 is an abundant number, since it is smaller than the sum of its proper divisors (20533124).

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

14686720 is an frugal number, since it uses more digits than its factorization.

14686720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5760 (or 5744 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 14686720 is about 3832.3256646585. The cubic root of 14686720 is about 244.8921919126.

The spelling of 14686720 in words is "fourteen million, six hundred eighty-six thousand, seven hundred twenty".