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28064118888 = 23321359508187
BaseRepresentation
bin11010001000110000…
…000111100001101000
32200102211120221201200
4122020300013201220
5424433403301023
620520435244200
72012312034411
oct321060074150
980384527650
1028064118888
11109a1510993
125532749660
1328532aa710
1415032c0808
15ae3bce743
hex688c07868

28064118888 has 96 divisors (see below), whose sum is σ = 83241194400. Its totient is φ = 8488738944.

The previous prime is 28064118883. The next prime is 28064118913. The reversal of 28064118888 is 88881146082.

It is not an unprimeable number, because it can be changed into a prime (28064118883) by changing a digit.

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, 198870 + ... + 309317.

It is an arithmetic number, because the mean of its divisors is an integer number (867095775).

Almost surely, 228064118888 is an apocalyptic number.

It is an amenable number.

28064118888 is an abundant number, since it is smaller than the sum of its proper divisors (55177075512).

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

28064118888 is a wasteful number, since it uses less digits than its factorization.

28064118888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508271 (or 508264 counting only the distinct ones).

The product of its (nonzero) digits is 1572864, while the sum is 54.

The spelling of 28064118888 in words is "twenty-eight billion, sixty-four million, one hundred eighteen thousand, eight hundred eighty-eight".

Divisors: 1 2 3 4 6 8 9 12 13 18 24 26 36 39 52 59 72 78 104 117 118 156 177 234 236 312 354 468 472 531 708 767 936 1062 1416 1534 2124 2301 3068 4248 4602 6136 6903 9204 13806 18408 27612 55224 508187 1016374 1524561 2032748 3049122 4065496 4573683 6098244 6606431 9147366 12196488 13212862 18294732 19819293 26425724 29983033 36589464 39638586 52851448 59457879 59966066 79277172 89949099 118915758 119932132 158554344 179898198 237831516 239864264 269847297 359796396 389779429 475663032 539694594 719592792 779558858 1079389188 1169338287 1559117716 2158778376 2338676574 3118235432 3508014861 4677353148 7016029722 9354706296 14032059444 28064118888