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20012168 = 23111911969
BaseRepresentation
bin100110001010…
…1110010001000
31101122201112102
41030111302020
520110342133
61552532532
7332046341
oct114256210
941581472
1020012168
1110329490
126851148
1341b8b27
14292d0c8
151b547e8
hex1315c88

20012168 has 32 divisors (see below), whose sum is σ = 43092000. Its totient is φ = 8616960.

The previous prime is 20012119. The next prime is 20012171. The reversal of 20012168 is 86121002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4313 + ... + 7656.

It is an arithmetic number, because the mean of its divisors is an integer number (1346625).

Almost surely, 220012168 is an apocalyptic number.

It is an amenable number.

20012168 is an abundant number, since it is smaller than the sum of its proper divisors (23079832).

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

20012168 is a wasteful number, since it uses less digits than its factorization.

20012168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12005 (or 12001 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 20012168 is about 4473.4961718996. The cubic root of 20012168 is about 271.4967988887.

It can be divided in two parts, 200 and 12168, that multiplied together give a square (2433600 = 15602).

The spelling of 20012168 in words is "twenty million, twelve thousand, one hundred sixty-eight".

Divisors: 1 2 4 8 11 19 22 38 44 76 88 152 209 418 836 1672 11969 23938 47876 95752 131659 227411 263318 454822 526636 909644 1053272 1819288 2501521 5003042 10006084 20012168