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14138293 = 131087561
BaseRepresentation
bin110101111011…
…101110110101
3222121022002111
4311323232311
512104411133
61223011021
7231113341
oct65735665
928538074
1014138293
117a87344
124899a71
132c10370
141c40621
1513941cd
hexd7bbb5

14138293 has 4 divisors (see below), whose sum is σ = 15225868. Its totient is φ = 13050720.

The previous prime is 14138291. The next prime is 14138297. The reversal of 14138293 is 39283141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39283141 = 172310773.

It can be written as a sum of positive squares in 2 ways, for example, as 1127844 + 13010449 = 1062^2 + 3607^2 .

It is a cyclic number.

It is not a de Polignac number, because 14138293 - 21 = 14138291 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 (14138291) 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, 543768 + ... + 543793.

It is an arithmetic number, because the mean of its divisors is an integer number (3806467).

Almost surely, 214138293 is an apocalyptic number.

14138293 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

14138293 is a deficient number, since it is larger than the sum of its proper divisors (1087575).

14138293 is a wasteful number, since it uses less digits than its factorization.

14138293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087574.

The product of its digits is 5184, while the sum is 31.

The square root of 14138293 is about 3760.0921531260. The cubic root of 14138293 is about 241.8052128810.

The spelling of 14138293 in words is "fourteen million, one hundred thirty-eight thousand, two hundred ninety-three".

Divisors: 1 13 1087561 14138293