14248721 has 4 divisors (see below), whose sum is σ = 14344500. Its totient is φ = 14152944.

The previous prime is 14248691. The next prime is 14248757. The reversal of 14248721 is 12784241.

14248721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12784241 = 83 ⋅154027.

It can be written as a sum of positive squares in 2 ways, for example, as 640000 + 13608721 = 800^2 + 3689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14248721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14248121) 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, 47666 + ... + 47963.

It is an arithmetic number, because the mean of its divisors is an integer number (3586125).

Almost surely, 2^14248721 is an apocalyptic number.

It is an amenable number.

14248721 is a deficient number, since it is larger than the sum of its proper divisors (95779).

14248721 is an equidigital number, since it uses as much as digits as its factorization.

14248721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95778.

The product of its digits is 3584, while the sum is 29.

The square root of 14248721 is about 3774.7478061455. The cubic root of 14248721 is about 242.4331257125.

The spelling of 14248721 in words is "fourteen million, two hundred forty-eight thousand, seven hundred twenty-one".