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12127868 = 2217178351
BaseRepresentation
bin101110010000…
…111001111100
3211211011022022
4232100321330
511101042433
61111535312
7205041134
oct56207174
924734268
1012127868
116933935
12408a538
13268826c
141879ac4
1510e8698
hexb90e7c

12127868 has 12 divisors (see below), whose sum is σ = 22472352. Its totient is φ = 5707200.

The previous prime is 12127861. The next prime is 12127873. The reversal of 12127868 is 86872121.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12127861) 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 3 ways as a sum of consecutive naturals, for example, 89108 + ... + 89243.

It is an arithmetic number, because the mean of its divisors is an integer number (1872696).

Almost surely, 212127868 is an apocalyptic number.

It is an amenable number.

12127868 is a deficient number, since it is larger than the sum of its proper divisors (10344484).

12127868 is a wasteful number, since it uses less digits than its factorization.

12127868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178372 (or 178370 counting only the distinct ones).

The product of its digits is 10752, while the sum is 35.

The square root of 12127868 is about 3482.5088657461. The cubic root of 12127868 is about 229.7531567249.

Adding to 12127868 its reverse (86872121), we get a palindrome (98999989).

The spelling of 12127868 in words is "twelve million, one hundred twenty-seven thousand, eight hundred sixty-eight".

Divisors: 1 2 4 17 34 68 178351 356702 713404 3031967 6063934 12127868