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28759984008 = 2337171190381
BaseRepresentation
bin11010110010001110…
…101000011110001000
32202020022222120012220
4122302032220132020
5432400023442013
621113454134040
72035461554610
oct326216503610
982208876186
1028759984008
1111219296728
1256a77b1320
1329344cca22
14156b89da40
15b34d36b23
hex6b23a8788

28759984008 has 32 divisors (see below), whose sum is σ = 82171383360. Its totient is φ = 8217138240.

The previous prime is 28759983929. The next prime is 28759984013. The reversal of 28759984008 is 80048995782.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85595023 + ... + 85595358.

It is an arithmetic number, because the mean of its divisors is an integer number (2567855730).

Almost surely, 228759984008 is an apocalyptic number.

28759984008 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28759984008 is an abundant number, since it is smaller than the sum of its proper divisors (53411399352).

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

28759984008 is a wasteful number, since it uses less digits than its factorization.

28759984008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171190397 (or 171190393 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 60.

The spelling of 28759984008 in words is "twenty-eight billion, seven hundred fifty-nine million, nine hundred eighty-four thousand, eight".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 84 168 171190381 342380762 513571143 684761524 1027142286 1198332667 1369523048 2054284572 2396665334 3594998001 4108569144 4793330668 7189996002 9586661336 14379992004 28759984008