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28165047030 = 234535996857
BaseRepresentation
bin11010001110110001…
…001000001011110110
32200200212111122010000
4122032301020023312
5430140223001110
620534442412130
72014645643511
oct321661101366
980625448100
1028165047030
1110a4348677a
125560501046
13286b187803
141512873d78
15aec9b91c0
hex68ec482f6

28165047030 has 80 divisors (see below), whose sum is σ = 75944420640. Its totient is φ = 7489680768.

The previous prime is 28165047023. The next prime is 28165047059. The reversal of 28165047030 is 3074056182.

28165047030 is a `hidden beast` number, since 2 + 81 + 6 + 504 + 70 + 3 + 0 = 666.

It is a super-2 number, since 2×281650470302 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 242362 + ... + 339218.

It is an arithmetic number, because the mean of its divisors is an integer number (949305258).

Almost surely, 228165047030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28165047030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37972210320).

28165047030 is an abundant number, since it is smaller than the sum of its proper divisors (47779373610).

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

28165047030 is a wasteful number, since it uses less digits than its factorization.

28165047030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97235 (or 97226 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 28165047030 in words is "twenty-eight billion, one hundred sixty-five million, forty-seven thousand, thirty".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 270 359 405 718 810 1077 1795 2154 3231 3590 5385 6462 9693 10770 16155 19386 29079 32310 48465 58158 96857 96930 145395 193714 290571 290790 484285 581142 871713 968570 1452855 1743426 2615139 2905710 4358565 5230278 7845417 8717130 13075695 15690834 26151390 34771663 39227085 69543326 78454170 104314989 173858315 208629978 312944967 347716630 521574945 625889934 938834901 1043149890 1564724835 1877669802 2816504703 3129449670 4694174505 5633009406 9388349010 14082523515 28165047030