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14008181 = 111273471
BaseRepresentation
bin110101011011…
…111101110101
3222100200121112
4311123331311
512041230211
61220124405
7230032115
oct65337565
928320545
1014008181
1179a8610
124836705
132b96085
141c09045
15136a88b
hexd5bf75

14008181 has 4 divisors (see below), whose sum is σ = 15281664. Its totient is φ = 12734700.

The previous prime is 14008171. The next prime is 14008199. The reversal of 14008181 is 18180041.

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: 18180041 = 111652731.

It is not a de Polignac number, because 14008181 - 26 = 14008117 is a prime.

It is a super-2 number, since 2×140081812 = 392458269857522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14008121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 636725 + ... + 636746.

It is an arithmetic number, because the mean of its divisors is an integer number (3820416).

Almost surely, 214008181 is an apocalyptic number.

14008181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

14008181 is a deficient number, since it is larger than the sum of its proper divisors (1273483).

14008181 is a wasteful number, since it uses less digits than its factorization.

14008181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273482.

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 14008181 is about 3742.7504592211. The cubic root of 14008181 is about 241.0611634043.

The spelling of 14008181 in words is "fourteen million, eight thousand, one hundred eighty-one".

Divisors: 1 11 1273471 14008181