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168808856 = 23191110477
BaseRepresentation
bin10100000111111…
…01000110011000
3102202122101012212
422003331012120
5321203340411
624430054252
74116565046
oct1203750630
9382571185
10168808856
1187319657
124864a388
1328c860c8
14185c3396
15ec4768b
hexa0fd198

168808856 has 16 divisors (see below), whose sum is σ = 318176640. Its totient is φ = 83961760.

The previous prime is 168808817. The next prime is 168808867. The reversal of 168808856 is 658808861.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 53711 + ... + 56766.

It is an arithmetic number, because the mean of its divisors is an integer number (19886040).

Almost surely, 2168808856 is an apocalyptic number.

It is an amenable number.

168808856 is a deficient number, since it is larger than the sum of its proper divisors (149367784).

168808856 is a wasteful number, since it uses less digits than its factorization.

168808856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110674 (or 110670 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 50.

The square root of 168808856 is about 12992.6462277705. The cubic root of 168808856 is about 552.6689624715.

The spelling of 168808856 in words is "one hundred sixty-eight million, eight hundred eight thousand, eight hundred fifty-six".

Divisors: 1 2 4 8 191 382 764 1528 110477 220954 441908 883816 21101107 42202214 84404428 168808856