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108871680 = 21435443
BaseRepresentation
bin1100111110101…
…00000000000000
321120212020212110
412133110000000
5210332343210
614445255320
72461252101
oct637240000
9246766773
10108871680
11565009a5
1230564540
131972b918
14106603a8
159858420
hex67d4000

108871680 has 120 divisors (see below), whose sum is σ = 349165152. Its totient is φ = 28966912.

The previous prime is 108871667. The next prime is 108871727. The reversal of 108871680 is 86178801.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245539 + ... + 245981.

Almost surely, 2108871680 is an apocalyptic number.

108871680 is a gapful number since it is divisible by the number (10) 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 108871680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174582576).

108871680 is an abundant number, since it is smaller than the sum of its proper divisors (240293472).

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

108871680 is an frugal number, since it uses more digits than its factorization.

108871680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 39.

The square root of 108871680 is about 10434.1592857307. The cubic root of 108871680 is about 477.4980930637.

The spelling of 108871680 in words is "one hundred eight million, eight hundred seventy-one thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 256 320 384 443 480 512 640 768 886 960 1024 1280 1329 1536 1772 1920 2048 2215 2560 2658 3072 3544 3840 4096 4430 5120 5316 6144 6645 7088 7680 8192 8860 10240 10632 12288 13290 14176 15360 16384 17720 20480 21264 24576 26580 28352 30720 35440 40960 42528 49152 53160 56704 61440 70880 81920 85056 106320 113408 122880 141760 170112 212640 226816 245760 283520 340224 425280 453632 567040 680448 850560 907264 1134080 1360896 1701120 1814528 2268160 2721792 3402240 3629056 4536320 5443584 6804480 7258112 9072640 10887168 13608960 18145280 21774336 27217920 36290560 54435840 108871680