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2688227568 = 243313236821
BaseRepresentation
bin1010000000111011…
…0001100011110000
320221100101002222000
42200032301203300
521001141240233
61122430014000
7123421362105
oct24016614360
96840332860
102688227568
11115a486184
12630347300
1333ac24200
141b704aaac
1510b00bd13
hexa03b18f0

2688227568 has 120 divisors (see below), whose sum is σ = 8355648240. Its totient is φ = 827124480.

The previous prime is 2688227567. The next prime is 2688227579. The reversal of 2688227568 is 8657228862.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (5160960) is a multiple of the sum of its prime factors (36864).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688227567) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 54598 + ... + 91418.

It is an arithmetic number, because the mean of its divisors is an integer number (69630402).

Almost surely, 22688227568 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 2688227568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4177824120).

2688227568 is an abundant number, since it is smaller than the sum of its proper divisors (5667420672).

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

2688227568 is a wasteful number, since it uses less digits than its factorization.

2688227568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36864 (or 36839 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The square root of 2688227568 is about 51848.1201973611. The cubic root of 2688227568 is about 1390.4498945672.

The spelling of 2688227568 in words is "two billion, six hundred eighty-eight million, two hundred twenty-seven thousand, five hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 13 16 18 24 26 27 36 39 48 52 54 72 78 104 108 117 144 156 169 208 216 234 312 338 351 432 468 507 624 676 702 936 1014 1352 1404 1521 1872 2028 2704 2808 3042 4056 4563 5616 6084 8112 9126 12168 18252 24336 36504 36821 73008 73642 110463 147284 220926 294568 331389 441852 478673 589136 662778 883704 957346 994167 1325556 1436019 1767408 1914692 1988334 2651112 2872038 3829384 3976668 4308057 5302224 5744076 6222749 7658768 7953336 8616114 11488152 12445498 12924171 15906672 17232228 18668247 22976304 24890996 25848342 34464456 37336494 49781992 51696684 56004741 68928912 74672988 99563984 103393368 112009482 149345976 168014223 206786736 224018964 298691952 336028446 448037928 672056892 896075856 1344113784 2688227568