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14705868138 = 23131131668467
BaseRepresentation
bin11011011001000100…
…11011110101101010
31101221212200111121220
431230202123311222
5220104200240023
610431125442510
71030265550063
oct155442336552
941855614556
1014705868138
116267096435
122a24b70436
131504924230
149d713b56a
155b10b43e3
hex36c89bd6a

14705868138 has 32 divisors (see below), whose sum is σ = 31954499136. Its totient is φ = 4484836608.

The previous prime is 14705868127. The next prime is 14705868143. The reversal of 14705868138 is 83186850741.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 825420 + ... + 843047.

It is an arithmetic number, because the mean of its divisors is an integer number (998578098).

Almost surely, 214705868138 is an apocalyptic number.

14705868138 is an abundant number, since it is smaller than the sum of its proper divisors (17248630998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

14705868138 is a wasteful number, since it uses less digits than its factorization.

14705868138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668598.

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 14705868138 in words is "fourteen billion, seven hundred five million, eight hundred sixty-eight thousand, one hundred thirty-eight".

Divisors: 1 2 3 6 13 26 39 78 113 226 339 678 1469 2938 4407 8814 1668467 3336934 5005401 10010802 21690071 43380142 65070213 130140426 188536771 377073542 565610313 1131220626 2450978023 4901956046 7352934069 14705868138