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28062886670 = 2571397317921
BaseRepresentation
bin11010001000101011…
…011010101100001110
32200102202021100102222
4122020223122230032
5424433044333140
620520353015342
72012265413060
oct321053325416
980382240388
1028062886670
11109a084a125
125532254552
132852c688b0
14150307d730
15ae3a395b5
hex688adab0e

28062886670 has 64 divisors (see below), whose sum is σ = 62811213696. Its totient is φ = 8789852160.

The previous prime is 28062886603. The next prime is 28062886729. The reversal of 28062886670 is 7668826082.

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 31 ways as a sum of consecutive naturals, for example, 70691 + ... + 247230.

It is an arithmetic number, because the mean of its divisors is an integer number (981425214).

Almost surely, 228062886670 is an apocalyptic number.

28062886670 is an abundant number, since it is smaller than the sum of its proper divisors (34748327026).

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

28062886670 is a wasteful number, since it uses less digits than its factorization.

28062886670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318045.

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 28062886670 in words is "twenty-eight billion, sixty-two million, eight hundred eighty-six thousand, six hundred seventy".

Divisors: 1 2 5 7 10 13 14 26 35 65 70 91 97 130 182 194 455 485 679 910 970 1261 1358 2522 3395 6305 6790 8827 12610 17654 44135 88270 317921 635842 1589605 2225447 3179210 4132973 4450894 8265946 11127235 20664865 22254470 28930811 30838337 41329730 57861622 61676674 144654055 154191685 215868359 289308110 308383370 400898381 431736718 801796762 1079341795 2004491905 2158683590 2806288667 4008983810 5612577334 14031443335 28062886670