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28719060032 = 2613231500787
BaseRepresentation
bin11010101111110010…
…100001010001000000
32202010110222102002002
4122233302201101000
5432304034410112
621105433043132
72034453660665
oct325762412100
982113872062
1028719060032
11111a8184963
125695b564a8
132928ba1760
141566289a6c
15b314511c2
hex6afca1440

28719060032 has 56 divisors (see below), whose sum is σ = 64041625536. Its totient is φ = 12678640128.

The previous prime is 28719060017. The next prime is 28719060049. The reversal of 28719060032 is 23006091782.

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, 731258 + ... + 769529.

It is an arithmetic number, because the mean of its divisors is an integer number (1143600456).

Almost surely, 228719060032 is an apocalyptic number.

It is an amenable number.

28719060032 is an abundant number, since it is smaller than the sum of its proper divisors (35322565504).

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

28719060032 is a wasteful number, since it uses less digits than its factorization.

28719060032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500835 (or 1500825 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 28719060032 in words is "twenty-eight billion, seven hundred nineteen million, sixty thousand, thirty-two".

Divisors: 1 2 4 8 13 16 23 26 32 46 52 64 92 104 184 208 299 368 416 598 736 832 1196 1472 2392 4784 9568 19136 1500787 3001574 6003148 12006296 19510231 24012592 34518101 39020462 48025184 69036202 78040924 96050368 138072404 156081848 276144808 312163696 448735313 552289616 624327392 897470626 1104579232 1248654784 1794941252 2209158464 3589882504 7179765008 14359530016 28719060032