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108129120 = 25351120479
BaseRepresentation
bin1100111000111…
…10101101100000
321112110112021020
412130132231200
5210140112440
614421325440
72452040151
oct634365540
9245415236
10108129120
1156044010
1230266880
131952b938
1410509928
15975d3d0
hex671eb60

108129120 has 96 divisors (see below), whose sum is σ = 371589120. Its totient is φ = 26211840.

The previous prime is 108129113. The next prime is 108129127. The reversal of 108129120 is 21921801.

It is an interprime number because it is at equal distance from previous prime (108129113) and next prime (108129127).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108129127) 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, 4960 + ... + 15519.

It is an arithmetic number, because the mean of its divisors is an integer number (3870720).

Almost surely, 2108129120 is an apocalyptic number.

108129120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108129120 is an abundant number, since it is smaller than the sum of its proper divisors (263460000).

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

108129120 is a wasteful number, since it uses less digits than its factorization.

108129120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20508 (or 20500 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 108129120 is about 10398.5152786347. The cubic root of 108129120 is about 476.4100226234.

The spelling of 108129120 in words is "one hundred eight million, one hundred twenty-nine thousand, one hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 32 33 40 44 48 55 60 66 80 88 96 110 120 132 160 165 176 220 240 264 330 352 440 480 528 660 880 1056 1320 1760 2640 5280 20479 40958 61437 81916 102395 122874 163832 204790 225269 245748 307185 327664 409580 450538 491496 614370 655328 675807 819160 901076 982992 1126345 1228740 1351614 1638320 1802152 1965984 2252690 2457480 2703228 3276640 3379035 3604304 4505380 4914960 5406456 6758070 7208608 9010760 9829920 10812912 13516140 18021520 21625824 27032280 36043040 54064560 108129120