14371821 has 6 divisors (see below), whose sum is σ = 20759310. Its totient is φ = 9581208.

The previous prime is 14371813. The next prime is 14371823. The reversal of 14371821 is 12817341.

It can be written as a sum of positive squares in only one way, i.e., 14333796 + 38025 = 3786^2 + 195^2 .

It is not a de Polignac number, because 14371821 - 2³ = 14371813 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14371823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 798426 + ... + 798443.

It is an arithmetic number, because the mean of its divisors is an integer number (3459885).

Almost surely, 2^14371821 is an apocalyptic number.

It is an amenable number.

14371821 is a deficient number, since it is larger than the sum of its proper divisors (6387489).

14371821 is a wasteful number, since it uses less digits than its factorization.

14371821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596875 (or 1596872 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 14371821 is about 3791.0184647400. The cubic root of 14371821 is about 243.1292814079.

The spelling of 14371821 in words is "fourteen million, three hundred seventy-one thousand, eight hundred twenty-one".