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28895495013 = 33711197110303
BaseRepresentation
bin11010111010010011…
…100100001101100101
32202120202222020101000
4122322103210031211
5433134221320023
621135134423513
72042025440460
oct327223441545
982522866330
1028895495013
11112888320a0
125725061b99
1329565c7a58
1415818962d7
15b41ba3243
hex6ba4e4365

28895495013 has 128 divisors (see below), whose sum is σ = 56976998400. Its totient is φ = 14018961600.

The previous prime is 28895494981. The next prime is 28895495021. The reversal of 28895495013 is 31059459882.

28895495013 is a `hidden beast` number, since 2 + 8 + 8 + 95 + 49 + 501 + 3 = 666.

It is not a de Polignac number, because 28895495013 - 25 = 28895494981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28895495813) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2799420 + ... + 2809722.

It is an arithmetic number, because the mean of its divisors is an integer number (445132800).

Almost surely, 228895495013 is an apocalyptic number.

It is an amenable number.

28895495013 is a deficient number, since it is larger than the sum of its proper divisors (28081503387).

28895495013 is a wasteful number, since it uses less digits than its factorization.

28895495013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10420 (or 10414 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 28895495013 in words is "twenty-eight billion, eight hundred ninety-five million, four hundred ninety-five thousand, thirteen".

Divisors: 1 3 7 9 11 19 21 27 33 57 63 71 77 99 133 171 189 209 213 231 297 399 497 513 627 639 693 781 1197 1349 1463 1491 1881 1917 2079 2343 3591 4047 4389 4473 5467 5643 7029 9443 10303 12141 13167 13419 14839 16401 21087 28329 30909 36423 39501 44517 49203 72121 84987 92727 103873 113333 133551 147609 195757 216363 254961 278181 311619 339999 400653 587271 649089 731513 793331 934857 1019997 1370299 1761813 1947267 2153327 2194539 2379993 2804571 3059991 4110897 5120591 5285439 6459981 6583617 7139979 8046643 12332691 13898747 15073289 15361773 19379943 19750851 21419937 24139929 36998073 41696241 45219867 46085319 56326501 58139829 72419787 97291229 125088723 135659601 138255957 152886217 168979503 217259361 291873687 375266169 406978803 458658651 506938509 875621061 1070203519 1375975953 1520815527 2626863183 3210610557 4127927859 9631831671 28895495013