Search a number
-
+
68675224860 = 223251189389713
BaseRepresentation
bin111111111101010111…
…001100010100011100
320120021002112220000200
4333331113030110130
52111121324143420
651314324223500
74650556531314
oct777527142434
9216232486020
1068675224860
1127141412990
121138723ab90
136625b46938
143476ac6444
151bbe179b90
hexffd5cc51c

68675224860 has 144 divisors (see below), whose sum is σ = 229806551520. Its totient is φ = 16461434880.

The previous prime is 68675224831. The next prime is 68675224867. The reversal of 68675224860 is 6842257686.

It is a junction number, because it is equal to n+sod(n) for n = 68675224797 and 68675224806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68675224867) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18637 + ... + 371076.

It is an arithmetic number, because the mean of its divisors is an integer number (1595878830).

Almost surely, 268675224860 is an apocalyptic number.

68675224860 is a gapful number since it is divisible by the number (60) 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 68675224860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114903275760).

68675224860 is an abundant number, since it is smaller than the sum of its proper divisors (161131326660).

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

68675224860 is a wasteful number, since it uses less digits than its factorization.

68675224860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389828 (or 389823 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The spelling of 68675224860 in words is "sixty-eight billion, six hundred seventy-five million, two hundred twenty-four thousand, eight hundred sixty".

Divisors: 1 2 3 4 5 6 9 10 11 12 15 18 20 22 30 33 36 44 45 55 60 66 89 90 99 110 132 165 178 180 198 220 267 330 356 396 445 495 534 660 801 890 979 990 1068 1335 1602 1780 1958 1980 2670 2937 3204 3916 4005 4895 5340 5874 8010 8811 9790 11748 14685 16020 17622 19580 29370 35244 44055 58740 88110 176220 389713 779426 1169139 1558852 1948565 2338278 3507417 3897130 4286843 4676556 5845695 7014834 7794260 8573686 11691390 12860529 14029668 17147372 17537085 21434215 23382780 25721058 34684457 35074170 38581587 42868430 51442116 64302645 69368914 70148340 77163174 85736860 104053371 128605290 138737828 154326348 173422285 192907935 208106742 257210580 312160113 346844570 381529027 385815870 416213484 520266855 624320226 693689140 763058054 771631740 1040533710 1144587081 1248640452 1526116108 1560800565 1907645135 2081067420 2289174162 3121601130 3433761243 3815290270 4578348324 5722935405 6243202260 6867522486 7630580540 11445870810 13735044972 17168806215 22891741620 34337612430 68675224860