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14218289 = 19748331
BaseRepresentation
bin110110001111…
…010000110001
3222202100211022
4312033100301
512114441124
61224425225
7231565511
oct66172061
928670738
1014218289
118031458
124918215
132c3a8b7
141c61841
1513acc5e
hexd8f431

14218289 has 4 divisors (see below), whose sum is σ = 14966640. Its totient is φ = 13469940.

The previous prime is 14218261. The next prime is 14218291. The reversal of 14218289 is 98281241.

14218289 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, and also an emirpimes, since its reverse is a distinct semiprime: 98281241 = 647151903.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-14218289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14218229) 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, 374147 + ... + 374184.

It is an arithmetic number, because the mean of its divisors is an integer number (3741660).

Almost surely, 214218289 is an apocalyptic number.

14218289 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

14218289 is a deficient number, since it is larger than the sum of its proper divisors (748351).

14218289 is an equidigital number, since it uses as much as digits as its factorization.

14218289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748350.

The product of its digits is 9216, while the sum is 35.

The square root of 14218289 is about 3770.7146537493. The cubic root of 14218289 is about 242.2604088420.

The spelling of 14218289 in words is "fourteen million, two hundred eighteen thousand, two hundred eighty-nine".

Divisors: 1 19 748331 14218289