Search a number
-
+
14148281 = 72021183
BaseRepresentation
bin110101111110…
…001010111001
3222121210210102
4311332022321
512110221111
61223125145
7231154430
oct65761271
928553712
1014148281
117a938a4
1248a37b5
132c14a84
141c44117
15139713b
hexd7e2b9

14148281 has 4 divisors (see below), whose sum is σ = 16169472. Its totient is φ = 12127092.

The previous prime is 14148257. The next prime is 14148311. The reversal of 14148281 is 18284141.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18284141 = 31589811.

It is a cyclic number.

It is not a de Polignac number, because 14148281 - 210 = 14147257 is a prime.

It is a super-2 number, since 2×141482812 = 400347710509922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (14148221) 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, 1010585 + ... + 1010598.

It is an arithmetic number, because the mean of its divisors is an integer number (4042368).

Almost surely, 214148281 is an apocalyptic number.

It is an amenable number.

14148281 is a deficient number, since it is larger than the sum of its proper divisors (2021191).

14148281 is an equidigital number, since it uses as much as digits as its factorization.

14148281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021190.

The product of its digits is 2048, while the sum is 29.

The square root of 14148281 is about 3761.4200775771. The cubic root of 14148281 is about 241.8621405917.

The spelling of 14148281 in words is "fourteen million, one hundred forty-eight thousand, two hundred eighty-one".

Divisors: 1 7 2021183 14148281