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109918872 = 233271712829
BaseRepresentation
bin1101000110100…
…11101010011000
321122211110100100
412203103222120
5211114400442
614523535400
72503203120
oct643235230
9248743310
10109918872
1157056748
123098a560
1319a0746b
1410853c80
1599b384c
hex68d3a98

109918872 has 96 divisors (see below), whose sum is σ = 360266400. Its totient is φ = 29555712.

The previous prime is 109918871. The next prime is 109918883. The reversal of 109918872 is 278819901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109918871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2154 + ... + 14982.

It is an arithmetic number, because the mean of its divisors is an integer number (3752775).

Almost surely, 2109918872 is an apocalyptic number.

109918872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109918872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180133200).

109918872 is an abundant number, since it is smaller than the sum of its proper divisors (250347528).

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

109918872 is a wasteful number, since it uses less digits than its factorization.

109918872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12865 (or 12858 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 45.

The square root of 109918872 is about 10484.2201426716. The cubic root of 109918872 is about 479.0241633085.

The spelling of 109918872 in words is "one hundred nine million, nine hundred eighteen thousand, eight hundred seventy-two".

Divisors: 1 2 3 4 6 7 8 9 12 14 17 18 21 24 28 34 36 42 51 56 63 68 72 84 102 119 126 136 153 168 204 238 252 306 357 408 476 504 612 714 952 1071 1224 1428 2142 2856 4284 8568 12829 25658 38487 51316 76974 89803 102632 115461 153948 179606 218093 230922 269409 307896 359212 436186 461844 538818 654279 718424 808227 872372 923688 1077636 1308558 1526651 1616454 1744744 1962837 2155272 2617116 3053302 3232908 3925674 4579953 5234232 6106604 6465816 7851348 9159906 12213208 13739859 15702696 18319812 27479718 36639624 54959436 109918872