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14271709 = 28150789
BaseRepresentation
bin110110011100…
…010011011101
3222212002002211
4312130103131
512123143314
61225520421
7232210324
oct66342335
928762084
1014271709
118068601
124943111
132c58cca
141c770bb
1513bd9c4
hexd9c4dd

14271709 has 4 divisors (see below), whose sum is σ = 14322780. Its totient is φ = 14220640.

The previous prime is 14271671. The next prime is 14271713. The reversal of 14271709 is 90717241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90717241 = 727124783.

It can be written as a sum of positive squares in 2 ways, for example, as 4368100 + 9903609 = 2090^2 + 3147^2 .

It is a cyclic number.

It is not a de Polignac number, because 14271709 - 27 = 14271581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14271739) 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, 25114 + ... + 25675.

It is an arithmetic number, because the mean of its divisors is an integer number (3580695).

Almost surely, 214271709 is an apocalyptic number.

It is an amenable number.

14271709 is a deficient number, since it is larger than the sum of its proper divisors (51071).

14271709 is an equidigital number, since it uses as much as digits as its factorization.

14271709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51070.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 14271709 is about 3777.7915506285. The cubic root of 14271709 is about 242.5634311695.

It can be divided in two parts, 1427 and 1709, that added together give a square (3136 = 562).

The spelling of 14271709 in words is "fourteen million, two hundred seventy-one thousand, seven hundred nine".

Divisors: 1 281 50789 14271709