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108281181920 = 2551514481837
BaseRepresentation
bin110010011011000001…
…1111011011011100000
3101100111022010222020012
41210312003323123200
53233224440310140
6121424345304052
710552210601012
oct1446603733340
9340438128205
10108281181920
1141a159a46aa
1218b9b195028
13a2983921a2
145352c001b2
152c3b278265
hex19360fb6e0

108281181920 has 48 divisors (see below), whose sum is σ = 257508484128. Its totient is φ = 43025625600.

The previous prime is 108281181889. The next prime is 108281181959. The reversal of 108281181920 is 29181182801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2216759 + ... + 2265078.

It is an arithmetic number, because the mean of its divisors is an integer number (5364760086).

Almost surely, 2108281181920 is an apocalyptic number.

108281181920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108281181920 is an abundant number, since it is smaller than the sum of its proper divisors (149227302208).

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

108281181920 is a wasteful number, since it uses less digits than its factorization.

108281181920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4482003 (or 4481995 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 41.

The spelling of 108281181920 in words is "one hundred eight billion, two hundred eighty-one million, one hundred eighty-one thousand, nine hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 151 160 302 604 755 1208 1510 2416 3020 4832 6040 12080 24160 4481837 8963674 17927348 22409185 35854696 44818370 71709392 89636740 143418784 179273480 358546960 676757387 717093920 1353514774 2707029548 3383786935 5414059096 6767573870 10828118192 13535147740 21656236384 27070295480 54140590960 108281181920