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2008428560 = 245733311039
BaseRepresentation
bin111011110110110…
…0011000000010000
312011222012202000222
41313231203000100
513103124203220
6531143332212
7100525234565
oct16755430020
95158182028
102008428560
11940784116
12480751068
13260138888
14150a5086c
15bb4c9e25
hex77b63010

2008428560 has 80 divisors (see below), whose sum is σ = 4752433920. Its totient is φ = 789212160.

The previous prime is 2008428559. The next prime is 2008428577. The reversal of 2008428560 is 658248002.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 2008428560.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1932521 + ... + 1933559.

It is an arithmetic number, because the mean of its divisors is an integer number (59405424).

Almost surely, 22008428560 is an apocalyptic number.

2008428560 is a gapful number since it is divisible by the number (20) 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 2008428560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2376216960).

2008428560 is an abundant number, since it is smaller than the sum of its proper divisors (2744005360).

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

2008428560 is a wasteful number, since it uses less digits than its factorization.

2008428560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456 (or 1450 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 2008428560 is about 44815.4946419204. The cubic root of 2008428560 is about 1261.6884561276.

The spelling of 2008428560 in words is "two billion, eight million, four hundred twenty-eight thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 73 80 146 292 331 365 584 662 730 1039 1168 1324 1460 1655 2078 2648 2920 3310 4156 5195 5296 5840 6620 8312 10390 13240 16624 20780 24163 26480 41560 48326 75847 83120 96652 120815 151694 193304 241630 303388 343909 379235 386608 483260 606776 687818 758470 966520 1213552 1375636 1516940 1719545 1933040 2751272 3033880 3439090 5502544 6067760 6878180 13756360 25105357 27512720 50210714 100421428 125526785 200842856 251053570 401685712 502107140 1004214280 2008428560