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28895006205 = 3351319186201
BaseRepresentation
bin11010111010010001…
…101100110111111101
32202120202001101212000
4122322101230313331
5433134110144310
621135120132513
72042021333412
oct327221546775
982522041760
1028895006205
111128852891a
125724a67139
132956486410
1415817aa109
15b41b084c0
hex6ba46cdfd

28895006205 has 64 divisors (see below), whose sum is σ = 55610634240. Its totient is φ = 14150592000.

The previous prime is 28895006201. The next prime is 28895006213. The reversal of 28895006205 is 50260059882.

28895006205 is a `hidden beast` number, since 2 + 8 + 89 + 500 + 62 + 0 + 5 = 666.

It is not a de Polignac number, because 28895006205 - 22 = 28895006201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28895006201) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 292105 + ... + 378305.

It is an arithmetic number, because the mean of its divisors is an integer number (868916160).

Almost surely, 228895006205 is an apocalyptic number.

It is an amenable number.

28895006205 is a deficient number, since it is larger than the sum of its proper divisors (26715628035).

28895006205 is a wasteful number, since it uses less digits than its factorization.

28895006205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86419 (or 86413 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 28895006205 in words is "twenty-eight billion, eight hundred ninety-five million, six thousand, two hundred five".

Divisors: 1 3 5 9 13 15 27 39 45 65 117 135 191 195 351 573 585 955 1719 1755 2483 2865 5157 7449 8595 12415 22347 25785 37245 67041 86201 111735 258603 335205 431005 775809 1120613 1293015 2327427 3361839 3879045 5603065 10085517 11637135 16464391 16809195 30256551 49393173 50427585 82321955 148179519 151282755 214037083 246965865 444538557 642111249 740897595 1070185415 1926333747 2222692785 3210556245 5779001241 9631668735 28895006205