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17929422693 = 32713191114617
BaseRepresentation
bin10000101100101011…
…010100011101100101
31201021112101001011100
4100230223110131211
5243204413011233
612123041430313
71203210402240
oct205453243545
951245331140
1017929422693
117670767706
12358463b399
1318c971c070
14c212d8257
156ee0b6813
hex42cad4765

17929422693 has 48 divisors (see below), whose sum is σ = 32041691136. Its totient is φ = 9407681280.

The previous prime is 17929422683. The next prime is 17929422757. The reversal of 17929422693 is 39622492971.

It is not a de Polignac number, because 17929422693 - 210 = 17929421669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17929422683) 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 47 ways as a sum of consecutive naturals, for example, 99121 + ... + 213737.

It is an arithmetic number, because the mean of its divisors is an integer number (667535232).

Almost surely, 217929422693 is an apocalyptic number.

17929422693 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

17929422693 is a deficient number, since it is larger than the sum of its proper divisors (14112268443).

17929422693 is a wasteful number, since it uses less digits than its factorization.

17929422693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114834 (or 114831 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The spelling of 17929422693 in words is "seventeen billion, nine hundred twenty-nine million, four hundred twenty-two thousand, six hundred ninety-three".

Divisors: 1 3 7 9 13 21 39 63 91 117 191 273 573 819 1337 1719 2483 4011 7449 12033 17381 22347 52143 114617 156429 343851 802319 1031553 1490021 2406957 4470063 7220871 10430147 13410189 21891847 31290441 65675541 93871323 153242929 197026623 284594011 459728787 853782033 1379186361 1992158077 2561346099 5976474231 17929422693