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14211281 = 72030183
BaseRepresentation
bin110110001101…
…100011010001
3222202000012202
4312031203101
512114230111
61224332545
7231536210
oct66154321
928660182
1014211281
118027167
124914155
132c37656
141c5d077
1513aab3b
hexd8d8d1

14211281 has 4 divisors (see below), whose sum is σ = 16241472. Its totient is φ = 12181092.

The previous prime is 14211257. The next prime is 14211287. The reversal of 14211281 is 18211241.

14211281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 14211281 - 218 = 13949137 is a prime.

It is a super-2 number, since 2×142112812 = 403921015321922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14211287) 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, 1015085 + ... + 1015098.

It is an arithmetic number, because the mean of its divisors is an integer number (4060368).

Almost surely, 214211281 is an apocalyptic number.

It is an amenable number.

14211281 is a deficient number, since it is larger than the sum of its proper divisors (2030191).

14211281 is an equidigital number, since it uses as much as digits as its factorization.

14211281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030190.

The product of its digits is 128, while the sum is 20.

The square root of 14211281 is about 3769.7852723995. The cubic root of 14211281 is about 242.2206000212.

The spelling of 14211281 in words is "fourteen million, two hundred eleven thousand, two hundred eighty-one".

Divisors: 1 7 2030183 14211281