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168678086 = 21919792243
BaseRepresentation
bin10100000110111…
…01001011000110
3102202101201211112
422003131023012
5321140144321
624423205022
74115511563
oct1203351306
9382351745
10168678086
118723a385
12485a6772
1328c3b725
141858b86a
15ec1da5b
hexa0dd2c6

168678086 has 16 divisors (see below), whose sum is σ = 266587200. Its totient is φ = 79824168.

The previous prime is 168678077. The next prime is 168678101. The reversal of 168678086 is 680876861.

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 7 ways as a sum of consecutive naturals, for example, 74081 + ... + 76323.

It is an arithmetic number, because the mean of its divisors is an integer number (16661700).

Almost surely, 2168678086 is an apocalyptic number.

168678086 is a deficient number, since it is larger than the sum of its proper divisors (97909114).

168678086 is a wasteful number, since it uses less digits than its factorization.

168678086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4243.

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 168678086 is about 12987.6127906556. The cubic root of 168678086 is about 552.5262148451.

The spelling of 168678086 in words is "one hundred sixty-eight million, six hundred seventy-eight thousand, eighty-six".

Divisors: 1 2 19 38 1979 2243 3958 4486 37601 42617 75202 85234 4438897 8877794 84339043 168678086