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14216641 = 172928837
BaseRepresentation
bin110110001110…
…110111000001
3222202021120021
4312032313001
512114413031
61224413441
7231560635
oct66166701
928667507
1014216641
11803019a
124917281
132c39c1a
141c60dc5
1513ac511
hexd8edc1

14216641 has 8 divisors (see below), whose sum is σ = 15572520. Its totient is φ = 12918528.

The previous prime is 14216639. The next prime is 14216647. The reversal of 14216641 is 14661241.

It can be written as a sum of positive squares in 4 ways, for example, as 4822416 + 9394225 = 2196^2 + 3065^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 14216641 - 21 = 14216639 is a prime.

It is a super-2 number, since 2×142166412 = 404225762645762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14216647) 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, 13926 + ... + 14911.

It is an arithmetic number, because the mean of its divisors is an integer number (1946565).

Almost surely, 214216641 is an apocalyptic number.

It is an amenable number.

14216641 is a deficient number, since it is larger than the sum of its proper divisors (1355879).

14216641 is a wasteful number, since it uses less digits than its factorization.

14216641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28883.

The product of its digits is 1152, while the sum is 25.

The square root of 14216641 is about 3770.4961212021. The cubic root of 14216641 is about 242.2510485836.

Adding to 14216641 its reverse (14661241), we get a palindrome (28877882).

The spelling of 14216641 in words is "fourteen million, two hundred sixteen thousand, six hundred forty-one".

Divisors: 1 17 29 493 28837 490229 836273 14216641