14357721 has 8 divisors (see below), whose sum is σ = 21878464. Its totient is φ = 8204400.

The previous prime is 14357719. The next prime is 14357729. The reversal of 14357721 is 12775341.

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

It is not a de Polignac number, because 14357721 - 2¹ = 14357719 is a prime.

It is a super-2 number, since 2×14357721² = 412288304627682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14357729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341830 + ... + 341871.

It is an arithmetic number, because the mean of its divisors is an integer number (2734808).

Almost surely, 2^14357721 is an apocalyptic number.

It is an amenable number.

14357721 is a deficient number, since it is larger than the sum of its proper divisors (7520743).

14357721 is an equidigital number, since it uses as much as digits as its factorization.

14357721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683711.

The product of its digits is 5880, while the sum is 30.

The square root of 14357721 is about 3789.1583498186. The cubic root of 14357721 is about 243.0497451038.

The spelling of 14357721 in words is "fourteen million, three hundred fifty-seven thousand, seven hundred twenty-one".