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168385230 = 23451315991
BaseRepresentation
bin10100000100101…
…01101011001110
3102201211212010000
422002111223032
5321101311410
624413025130
74113152016
oct1202255316
9381755100
10168385230
118705a352
12484851a6
1328b68340
1418512c46
15ebb1dc0
hexa095ace

168385230 has 80 divisors (see below), whose sum is σ = 487628064. Its totient is φ = 41446080.

The previous prime is 168385219. The next prime is 168385247. The reversal of 168385230 is 32583861.

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 39 ways as a sum of consecutive naturals, for example, 2535 + ... + 18525.

Almost surely, 2168385230 is an apocalyptic number.

168385230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 168385230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243814032).

168385230 is an abundant number, since it is smaller than the sum of its proper divisors (319242834).

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

168385230 is a wasteful number, since it uses less digits than its factorization.

168385230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16023 (or 16014 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 168385230 is about 12976.3334574910. Note that the first 3 decimals coincide. The cubic root of 168385230 is about 552.2062674318.

The spelling of 168385230 in words is "one hundred sixty-eight million, three hundred eighty-five thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 13 15 18 26 27 30 39 45 54 65 78 81 90 117 130 135 162 195 234 270 351 390 405 585 702 810 1053 1170 1755 2106 3510 5265 10530 15991 31982 47973 79955 95946 143919 159910 207883 239865 287838 415766 431757 479730 623649 719595 863514 1039415 1247298 1295271 1439190 1870947 2078830 2158785 2590542 3118245 3741894 4317570 5612841 6236490 6476355 9354735 11225682 12952710 16838523 18709470 28064205 33677046 56128410 84192615 168385230