14285721 has 8 divisors (see below), whose sum is σ = 19117504. Its totient is φ = 9488880.

The previous prime is 14285717. The next prime is 14285731. The reversal of 14285721 is 12758241.

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

It is not a de Polignac number, because 14285721 - 2² = 14285717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14285731) 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, 7765 + ... + 9426.

It is an arithmetic number, because the mean of its divisors is an integer number (2389688).

Almost surely, 2^14285721 is an apocalyptic number.

It is an amenable number.

14285721 is a deficient number, since it is larger than the sum of its proper divisors (4831783).

14285721 is a wasteful number, since it uses less digits than its factorization.

14285721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17471.

The product of its digits is 4480, while the sum is 30.

The square root of 14285721 is about 3779.6456183087. The cubic root of 14285721 is about 242.6427883343.

The spelling of 14285721 in words is "fourteen million, two hundred eighty-five thousand, seven hundred twenty-one".