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13207269438 = 23211232900147
BaseRepresentation
bin11000100110011011…
…01111000000111110
31021002102210210200100
430103031233000332
5204022030110223
610022313341530
7645200636466
oct142315570076
937072723610
1013207269438
115668183010
1226871078a6
131326302a3c
148d40c0ba6
15524745043
hex31336f03e

13207269438 has 48 divisors (see below), whose sum is σ = 32574462336. Its totient is φ = 3828192720.

The previous prime is 13207269431. The next prime is 13207269463. The reversal of 13207269438 is 83496270231.

13207269438 is a `hidden beast` number, since 1 + 3 + 207 + 2 + 6 + 9 + 438 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 13207269393 and 13207269402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13207269431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1445520 + ... + 1454627.

It is an arithmetic number, because the mean of its divisors is an integer number (678634632).

Almost surely, 213207269438 is an apocalyptic number.

13207269438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13207269438 is an abundant number, since it is smaller than the sum of its proper divisors (19367192898).

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

13207269438 is a wasteful number, since it uses less digits than its factorization.

13207269438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2900189 (or 2900186 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 13207269438 in words is "thirteen billion, two hundred seven million, two hundred sixty-nine thousand, four hundred thirty-eight".

Divisors: 1 2 3 6 9 11 18 22 23 33 46 66 69 99 138 198 207 253 414 506 759 1518 2277 4554 2900147 5800294 8700441 17400882 26101323 31901617 52202646 63803234 66703381 95704851 133406762 191409702 200110143 287114553 400220286 574229106 600330429 733737191 1200660858 1467474382 2201211573 4402423146 6603634719 13207269438