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8668108784 = 241726179389
BaseRepresentation
bin10000001001010100…
…01101011111110000
3211101002120112212002
420010222031133300
5120223013440114
63552043353132
7424542465116
oct100452153760
924332515762
108668108784
113748a15475
12181ab227a8
13a81a9776a
145c32ddab6
1535aebd7de
hex204a8d7f0

8668108784 has 120 divisors (see below), whose sum is σ = 18409684800. Its totient is φ = 3951267840.

The previous prime is 8668108717. The next prime is 8668108793. The reversal of 8668108784 is 4878018668.

It is a super-2 number, since 2×86681087842 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22282862 + ... + 22283250.

It is an arithmetic number, because the mean of its divisors is an integer number (153414040).

Almost surely, 28668108784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8668108784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9204842400).

8668108784 is an abundant number, since it is smaller than the sum of its proper divisors (9741576016).

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

8668108784 is a wasteful number, since it uses less digits than its factorization.

8668108784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 56.

The square root of 8668108784 is about 93102.6787154913. The cubic root of 8668108784 is about 2054.1939746403.

The spelling of 8668108784 in words is "eight billion, six hundred sixty-eight million, one hundred eight thousand, seven hundred eighty-four".

Divisors: 1 2 4 8 16 17 34 61 68 79 122 136 158 244 272 289 316 389 488 578 632 778 976 1037 1156 1264 1343 1556 2074 2312 2686 3112 4148 4624 4819 5372 6224 6613 8296 9638 10744 13226 16592 17629 19276 21488 22831 23729 26452 30731 35258 38552 45662 47458 52904 61462 70516 77104 81923 91324 94916 105808 112421 122924 141032 163846 182648 189832 224842 245848 282064 327692 365296 379664 403393 449684 491696 522427 655384 806786 899368 1044854 1310768 1392691 1613572 1798736 1874591 2089708 2785382 3227144 3749182 4179416 5570764 6454288 6857681 7498364 8358832 8881259 11141528 13715362 14996728 17762518 22283056 27430724 29993456 31868047 35525036 54861448 63736094 71050072 109722896 127472188 142100144 254944376 509888752 541756799 1083513598 2167027196 4334054392 8668108784