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13936923 = 32721113217
BaseRepresentation
bin110101001010…
…100100011011
3222020001212100
4311022210123
512031440143
61214414443
7226314300
oct65124433
928201770
1013936923
11795a020
124801423
132b6c800
141bcb0a7
1513546d3
hexd4a91b

13936923 has 108 divisors (see below), whose sum is σ = 29290248. Its totient is φ = 6289920.

The previous prime is 13936913. The next prime is 13936927. The reversal of 13936923 is 32963931.

It is a happy number.

13936923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13936923 - 25 = 13936891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13936927) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 819811 + ... + 819827.

It is an arithmetic number, because the mean of its divisors is an integer number (271206).

Almost surely, 213936923 is an apocalyptic number.

13936923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13936923 is an abundant number, since it is smaller than the sum of its proper divisors (15353325).

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

13936923 is a wasteful number, since it uses less digits than its factorization.

13936923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 51 counting only the distinct ones).

The product of its digits is 26244, while the sum is 36.

The square root of 13936923 is about 3733.2188524114. The cubic root of 13936923 is about 240.6517182453.

The spelling of 13936923 in words is "thirteen million, nine hundred thirty-six thousand, nine hundred twenty-three".

Divisors: 1 3 7 9 11 13 17 21 33 39 49 51 63 77 91 99 117 119 143 147 153 169 187 221 231 273 357 429 441 507 539 561 637 663 693 819 833 1001 1071 1183 1287 1309 1521 1547 1617 1683 1859 1911 1989 2431 2499 2873 3003 3549 3927 4641 4851 5577 5733 7007 7293 7497 8281 8619 9009 9163 10647 10829 11781 13013 13923 16731 17017 20111 21021 21879 24843 25857 27489 31603 32487 39039 51051 60333 63063 74529 82467 91091 94809 97461 117117 119119 140777 153153 180999 221221 273273 284427 357357 422331 663663 819819 1072071 1266993 1548547 1990989 4645641 13936923