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13002138387 = 34731924631
BaseRepresentation
bin11000001101111110…
…01110001100010011
31020120010211001210000
430012333032030103
5203112021412022
65550104541043
7640130232000
oct140677161423
936503731700
1013002138387
115572406017
12262a481783
1312c2970114
148b4b648a7
155117256ac
hex306fce313

13002138387 has 80 divisors (see below), whose sum is σ = 23843776000. Its totient is φ = 7038465840.

The previous prime is 13002138361. The next prime is 13002138397. The reversal of 13002138387 is 78383120031.

It is not a de Polignac number, because 13002138387 - 28 = 13002138131 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13002138397) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 515562 + ... + 540192.

It is an arithmetic number, because the mean of its divisors is an integer number (298047200).

Almost surely, 213002138387 is an apocalyptic number.

13002138387 is a deficient number, since it is larger than the sum of its proper divisors (10841637613).

13002138387 is an equidigital number, since it uses as much as digits as its factorization.

13002138387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24683 (or 24660 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 13002138387 in words is "thirteen billion, two million, one hundred thirty-eight thousand, three hundred eighty-seven".

Divisors: 1 3 7 9 19 21 27 49 57 63 81 133 147 171 189 343 399 441 513 567 931 1029 1197 1323 1539 2793 3087 3591 3969 6517 8379 9261 10773 19551 24631 25137 27783 58653 73893 75411 172417 175959 221679 467989 517251 527877 665037 1206919 1403967 1551753 1995111 3275923 3620757 4211901 4655259 8448433 9827769 10862271 12635703 13965777 22931461 25345299 29483307 32586813 37907109 68794383 76035897 88449921 97760439 160520227 206383149 228107691 265349763 481560681 619149447 684323073 1444682043 1857448341 4334046129 13002138387