14638221 has 12 divisors (see below), whose sum is σ = 22770748. Its totient is φ = 9008064.

The previous prime is 14638213. The next prime is 14638223. The reversal of 14638221 is 12283641.

14638221 is a `hidden beast` number, since 1 + 4 + 638 + 2 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1022121 + 13616100 = 1011^2 + 3690^2 .

It is not a de Polignac number, because 14638221 - 2³ = 14638213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14638223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62440 + ... + 62673.

Almost surely, 2^14638221 is an apocalyptic number.

It is an amenable number.

14638221 is a deficient number, since it is larger than the sum of its proper divisors (8132527).

14638221 is a wasteful number, since it uses less digits than its factorization.

14638221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125132 (or 125129 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 14638221 is about 3825.9928123299. The cubic root of 14638221 is about 244.6223307947.

The spelling of 14638221 in words is "fourteen million, six hundred thirty-eight thousand, two hundred twenty-one".