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28168007070 = 2357311431297
BaseRepresentation
bin11010001110111100…
…011010110110011110
32200201002002000112010
4122032330122312132
5430142002211240
620535030052050
72015013052410
oct321674326636
980632060463
1028168007070
1110a45118695
1255614aa026
13286b982c08
1415130049b0
15aecda1280
hex68ef1ad9e

28168007070 has 64 divisors (see below), whose sum is σ = 77509426176. Its totient is φ = 6417684480.

The previous prime is 28168007069. The next prime is 28168007177. The reversal of 28168007070 is 7070086182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150339 + ... + 280958.

It is an arithmetic number, because the mean of its divisors is an integer number (1211084784).

Almost surely, 228168007070 is an apocalyptic number.

28168007070 is an abundant number, since it is smaller than the sum of its proper divisors (49341419106).

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

28168007070 is a wasteful number, since it uses less digits than its factorization.

28168007070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431625.

The product of its (nonzero) digits is 37632, while the sum is 39.

The spelling of 28168007070 in words is "twenty-eight billion, one hundred sixty-eight million, seven thousand, seventy".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 311 622 933 1555 1866 2177 3110 4354 4665 6531 9330 10885 13062 21770 32655 65310 431297 862594 1293891 2156485 2587782 3019079 4312970 6038158 6469455 9057237 12938910 15095395 18114474 30190790 45286185 90572370 134133367 268266734 402400101 670666835 804800202 938933569 1341333670 1877867138 2012000505 2816800707 4024001010 4694667845 5633601414 9389335690 14084003535 28168007070