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168103040 = 2757157239
BaseRepresentation
bin10100000010100…
…00110010000000
3102201022112000112
422001100302000
5321013244130
624403010452
74110565220
oct1201206200
9381275015
10168103040
1186987336
1248369a28
1328a99a71
141847c080
15eb58495
hexa050c80

168103040 has 128 divisors (see below), whose sum is σ = 464140800. Its totient is φ = 57028608.

The previous prime is 168103027. The next prime is 168103093. The reversal of 168103040 is 40301861.

168103040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 168102997 and 168103015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 703241 + ... + 703479.

It is an arithmetic number, because the mean of its divisors is an integer number (3626100).

Almost surely, 2168103040 is an apocalyptic number.

168103040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168103040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232070400).

168103040 is an abundant number, since it is smaller than the sum of its proper divisors (296037760).

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

168103040 is a wasteful number, since it uses less digits than its factorization.

168103040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 168103040 is about 12965.4556418199. The cubic root of 168103040 is about 551.8976215649.

The spelling of 168103040 in words is "one hundred sixty-eight million, one hundred three thousand, forty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 140 157 160 224 239 280 314 320 448 478 560 628 640 785 896 956 1099 1120 1195 1256 1570 1673 1912 2198 2240 2390 2512 3140 3346 3824 4396 4480 4780 5024 5495 6280 6692 7648 8365 8792 9560 10048 10990 12560 13384 15296 16730 17584 19120 20096 21980 25120 26768 30592 33460 35168 37523 38240 43960 50240 53536 66920 70336 75046 76480 87920 100480 107072 133840 140672 150092 152960 175840 187615 214144 262661 267680 300184 351680 375230 525322 535360 600368 703360 750460 1050644 1070720 1200736 1313305 1500920 2101288 2401472 2626610 3001840 4202576 4802944 5253220 6003680 8405152 10506440 12007360 16810304 21012880 24014720 33620608 42025760 84051520 168103040