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168863105 = 540184221
BaseRepresentation
bin10100001000010…
…10010110000001
3102202202010122002
422010022112001
5321212104410
624431153345
74120212155
oct1204122601
9382663562
10168863105
1187356394
1248675855
1328ca49c8
14185d9065
15ec587a5
hexa10a581

168863105 has 8 divisors (see below), whose sum is σ = 203143464. Its totient is φ = 134752000.

The previous prime is 168863087. The next prime is 168863111. The reversal of 168863105 is 501368861.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 122500624 + 46362481 = 11068^2 + 6809^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 168863105 - 214 = 168846721 is a prime.

It is a Duffinian number.

It is a Curzon 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, 40106 + ... + 44115.

It is an arithmetic number, because the mean of its divisors is an integer number (25392933).

Almost surely, 2168863105 is an apocalyptic number.

It is an amenable number.

168863105 is a deficient number, since it is larger than the sum of its proper divisors (34280359).

168863105 is an equidigital number, since it uses as much as digits as its factorization.

168863105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84627.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 168863105 is about 12994.7337410199. The cubic root of 168863105 is about 552.7281586696.

It can be divided in two parts, 16886 and 3105, that added together give a palindrome (19991).

The spelling of 168863105 in words is "one hundred sixty-eight million, eight hundred sixty-three thousand, one hundred five".

Divisors: 1 5 401 2005 84221 421105 33772621 168863105