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14721 = 37701

14721 has 8 divisors (see below), whose sum is σ = 22464. Its totient is φ = 8400.

The previous prime is 14717. The next prime is 14723. The reversal of 14721 is 12741.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 14721 - 22 = 14717 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

14721 is a lucky number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 14721.

It is not an unprimeable number, because it can be changed into a prime (14723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330 + ... + 371.

It is an arithmetic number, because the mean of its divisors is an integer number (2808).

It is a Proth number, since it is equal to 115 ⋅ 27 + 1 and 115 < 27.

214721 is an apocalyptic number.

It is an amenable number.

14721 is a deficient number, since it is larger than the sum of its proper divisors (7743).

14721 is an equidigital number, since it uses as much as digits as its factorization.

14721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711.

The product of its digits is 56, while the sum is 15.

The square root of 14721 is about 121.3301281628. The cubic root of 14721 is about 24.5082576635.

Subtracting from 14721 its sum of digits (15), we obtain a triangular number (14706 = T171).

The spelling of 14721 in words is "fourteen thousand, seven hundred twenty-one", and thus it is an iban number.

Divisors: 1 3 7 21 701 2103 4907 14721