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17984429988 = 22371146718671
BaseRepresentation
bin10000101111111101…
…001001111110100100
31201102100212200222120
4100233331021332210
5243313003224423
612132324425540
71204446063330
oct205775117644
951370780876
1017984429988
117699818488
12359ab482b0
131907c3b665
14c287367c0
15703d2eee3
hex42ff49fa4

17984429988 has 48 divisors (see below), whose sum is σ = 47965231104. Its totient is φ = 5137685280.

The previous prime is 17984429971. The next prime is 17984429989. The reversal of 17984429988 is 88992448971.

It is not an unprimeable number, because it can be changed into a prime (17984429989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 953893 + ... + 972563.

It is an arithmetic number, because the mean of its divisors is an integer number (999275648).

Almost surely, 217984429988 is an apocalyptic number.

It is an amenable number.

17984429988 is an abundant number, since it is smaller than the sum of its proper divisors (29980801116).

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

17984429988 is a wasteful number, since it uses less digits than its factorization.

17984429988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30152 (or 30150 counting only the distinct ones).

The product of its digits is 83607552, while the sum is 69.

The spelling of 17984429988 in words is "seventeen billion, nine hundred eighty-four million, four hundred twenty-nine thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 11467 18671 22934 34401 37342 45868 56013 68802 74684 80269 112026 130697 137604 160538 224052 240807 261394 321076 392091 481614 522788 784182 963228 1568364 214100357 428200714 642301071 856401428 1284602142 1498702499 2569204284 2997404998 4496107497 5994809996 8992214994 17984429988