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28190360912 = 2472271277479
BaseRepresentation
bin11010010000010001…
…101100010101010000
32200202122010201020012
4122100101230111100
5430213213022122
620541145134052
72015404054100
oct322021542520
980678121205
1028190360912
1110a567a643a
125568a8a328
1328734ab83c
141515d83200
15aeed197e2
hex69046c550

28190360912 has 120 divisors (see below), whose sum is σ = 64134466560. Its totient is φ = 11968508160.

The previous prime is 28190360873. The next prime is 28190361029. The reversal of 28190360912 is 21906309182.

It is a self number, because there is not a number n which added to its sum of digits gives 28190360912.

It is a congruent number.

It is an unprimeable number.

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, 58852289 + ... + 58852767.

It is an arithmetic number, because the mean of its divisors is an integer number (534453888).

Almost surely, 228190360912 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 28190360912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32067233280).

28190360912 is an abundant number, since it is smaller than the sum of its proper divisors (35944105648).

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

28190360912 is a wasteful number, since it uses less digits than its factorization.

28190360912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 28190360912 in words is "twenty-eight billion, one hundred ninety million, three hundred sixty thousand, nine hundred twelve".

Divisors: 1 2 4 7 8 14 16 28 49 56 98 112 196 271 277 392 479 542 554 784 958 1084 1108 1897 1916 1939 2168 2216 3353 3794 3832 3878 4336 4432 6706 7588 7664 7756 13279 13412 13573 15176 15512 23471 26558 26824 27146 30352 31024 46942 53116 53648 54292 75067 93884 106232 108584 129809 132683 150134 187768 212464 217168 259618 265366 300268 375536 519236 525469 530732 600536 908663 928781 1038472 1050938 1061464 1201072 1817326 1857562 2076944 2101876 2122928 3634652 3678283 3715124 4203752 6360641 6501467 7269304 7356566 7430248 8407504 12721282 13002934 14538608 14713132 14860496 25442564 26005868 29426264 35957093 50885128 52011736 58852528 71914186 101770256 104023472 143828372 251699651 287656744 503399302 575313488 1006798604 1761897557 2013597208 3523795114 4027194416 7047590228 14095180456 28190360912