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28555455033 = 32717412332791
BaseRepresentation
bin11010100110000010…
…011010101000111001
32201201002010102012200
4122212002122220321
5431440144030113
621041310300413
72030426235330
oct324602325071
981632112180
1028555455033
11111238a0016
12564b1b7709
13290101b171
14154c65cd17
15b21dd5873
hex6a609aa39

28555455033 has 96 divisors (see below), whose sum is σ = 51367260672. Its totient is φ = 14913331200.

The previous prime is 28555454987. The next prime is 28555455037. The reversal of 28555455033 is 33055455582.

28555455033 is a `hidden beast` number, since 2 + 8 + 55 + 545 + 50 + 3 + 3 = 666.

It is not a de Polignac number, because 28555455033 - 28 = 28555454777 is a prime.

It is a super-3 number, since 3×285554550333 (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28555455033.

It is not an unprimeable number, because it can be changed into a prime (28555455037) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10229868 + ... + 10232658.

It is an arithmetic number, because the mean of its divisors is an integer number (535075632).

Almost surely, 228555455033 is an apocalyptic number.

It is an amenable number.

28555455033 is a deficient number, since it is larger than the sum of its proper divisors (22811805639).

28555455033 is a wasteful number, since it uses less digits than its factorization.

28555455033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3095 (or 3092 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 45.

The spelling of 28555455033 in words is "twenty-eight billion, five hundred fifty-five million, four hundred fifty-five thousand, thirty-three".

Divisors: 1 3 7 9 17 21 41 51 63 119 123 153 233 287 357 369 697 699 861 1071 1631 2091 2097 2583 2791 3961 4879 4893 6273 8373 9553 11883 14637 14679 19537 25119 27727 28659 35649 43911 47447 58611 66871 83181 85977 114431 142341 162401 175833 200613 249543 332129 343293 427023 487203 601839 650303 801017 996387 1029879 1136807 1461609 1945327 1950909 2403051 2989161 3410421 4552121 5835981 5852727 7209153 10231263 11055151 13617289 13656363 17507943 26662423 33165453 40851867 40969089 77386057 79987269 99496359 122555601 186636961 232158171 239961807 453261191 559910883 696474513 1359783573 1679732649 3172828337 4079350719 9518485011 28555455033