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14172281 = 26353887
BaseRepresentation
bin110110000100…
…000001111001
3222200000201022
4312010001321
512112003111
61223432225
7231314414
oct66040171
928600638
1014172281
117aaa932
1248b5675
132c22986
141c4cb7b
15139e2db
hexd84079

14172281 has 4 divisors (see below), whose sum is σ = 14226432. Its totient is φ = 14118132.

The previous prime is 14172269. The next prime is 14172287. The reversal of 14172281 is 18227141.

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: 18227141 = 43423887.

It is a cyclic number.

It is not a de Polignac number, because 14172281 - 26 = 14172217 is a prime.

It is a super-2 number, since 2×141722812 = 401707097485922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14172281.

It is not an unprimeable number, because it can be changed into a prime (14172287) 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, 26681 + ... + 27206.

It is an arithmetic number, because the mean of its divisors is an integer number (3556608).

Almost surely, 214172281 is an apocalyptic number.

It is an amenable number.

14172281 is a deficient number, since it is larger than the sum of its proper divisors (54151).

14172281 is an equidigital number, since it uses as much as digits as its factorization.

14172281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54150.

The product of its digits is 896, while the sum is 26.

The square root of 14172281 is about 3764.6090102426. The cubic root of 14172281 is about 241.9988217961.

The spelling of 14172281 in words is "fourteen million, one hundred seventy-two thousand, two hundred eighty-one".

Divisors: 1 263 53887 14172281