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68862870210 = 235193131312451
BaseRepresentation
bin100000000100010001…
…1000000001011000010
320120202011122021001110
41000020203000023002
52112012343321320
651345110144150
74655325511311
oct1001043001302
9216664567043
1068862870210
1127228327692
121141a052056
1366559966a4
1434939b0278
151bd08935e0
hex10088c02c2

68862870210 has 128 divisors (see below), whose sum is σ = 180169482240. Its totient is φ = 16780608000.

The previous prime is 68862870187. The next prime is 68862870217. The reversal of 68862870210 is 1207826886.

It is a self number, because there is not a number n which added to its sum of digits gives 68862870210.

It is not an unprimeable number, because it can be changed into a prime (68862870217) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5524485 + ... + 5536935.

It is an arithmetic number, because the mean of its divisors is an integer number (1407574080).

Almost surely, 268862870210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68862870210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90084741120).

68862870210 is an abundant number, since it is smaller than the sum of its proper divisors (111306612030).

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

68862870210 is a wasteful number, since it uses less digits than its factorization.

68862870210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12824.

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 68862870210 in words is "sixty-eight billion, eight hundred sixty-two million, eight hundred seventy thousand, two hundred ten".

Divisors: 1 2 3 5 6 10 15 19 30 31 38 57 62 93 95 114 155 186 190 285 310 313 465 570 589 626 930 939 1178 1565 1767 1878 2945 3130 3534 4695 5890 5947 8835 9390 9703 11894 12451 17670 17841 19406 24902 29109 29735 35682 37353 48515 58218 59470 62255 74706 89205 97030 124510 145545 178410 184357 186765 236569 291090 368714 373530 385981 473138 553071 709707 771962 921785 1106142 1157943 1182845 1419414 1843570 1929905 2315886 2365690 2765355 3548535 3859810 3897163 5530710 5789715 7097070 7333639 7794326 11579430 11691489 14667278 19485815 22000917 23382978 36668195 38971630 44001834 58457445 73336390 74046097 110004585 116914890 120812053 148092194 220009170 222138291 241624106 362436159 370230485 444276582 604060265 724872318 740460970 1110691455 1208120530 1812180795 2221382910 2295429007 3624361590 4590858014 6886287021 11477145035 13772574042 22954290070 34431435105 68862870210