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188704142 = 21114595879
BaseRepresentation
bin10110011111101…
…10010110001110
3111011002011102022
423033312112032
5341302013032
630420330142
74450646564
oct1317662616
9434064368
10188704142
1197578240
1253243952
1330130973
141b0c1a34
1511877512
hexb3f658e

188704142 has 16 divisors (see below), whose sum is σ = 309052800. Its totient is φ = 85701240.

The previous prime is 188704111. The next prime is 188704151. The reversal of 188704142 is 241407881.

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 7 ways as a sum of consecutive naturals, for example, 29159 + ... + 35037.

It is an arithmetic number, because the mean of its divisors is an integer number (19315800).

Almost surely, 2188704142 is an apocalyptic number.

188704142 is a deficient number, since it is larger than the sum of its proper divisors (120348658).

188704142 is a wasteful number, since it uses less digits than its factorization.

188704142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7351.

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 188704142 is about 13736.9626191528. The cubic root of 188704142 is about 573.5797508295.

The spelling of 188704142 in words is "one hundred eighty-eight million, seven hundred four thousand, one hundred forty-two".

Divisors: 1 2 11 22 1459 2918 5879 11758 16049 32098 64669 129338 8577461 17154922 94352071 188704142