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14187013 = 138110273
BaseRepresentation
bin110110000111…
…101000000101
3222200202220221
4312013220011
512112441023
61224024341
7231405361
oct66075005
928622827
1014187013
11800aa05
1249020b1
132c295a9
141c542a1
1513a385d
hexd87a05

14187013 has 4 divisors (see below), whose sum is σ = 14198668. Its totient is φ = 14175360.

The previous prime is 14187011. The next prime is 14187059. The reversal of 14187013 is 31078141.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4743684 + 9443329 = 2178^2 + 3073^2 .

It is a cyclic number.

It is not a de Polignac number, because 14187013 - 21 = 14187011 is a prime.

It is a super-3 number, since 3×141870133 (a number of 22 digits) contains 333 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 (14187011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3756 + ... + 6517.

It is an arithmetic number, because the mean of its divisors is an integer number (3549667).

Almost surely, 214187013 is an apocalyptic number.

It is an amenable number.

14187013 is a deficient number, since it is larger than the sum of its proper divisors (11655).

14187013 is a wasteful number, since it uses less digits than its factorization.

14187013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11654.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 14187013 is about 3766.5651461245. The cubic root of 14187013 is about 242.0826448599.

The spelling of 14187013 in words is "fourteen million, one hundred eighty-seven thousand, thirteen".

Divisors: 1 1381 10273 14187013