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28230168 = 2337116567
BaseRepresentation
bin110101110110…
…0001000011000
31222010020111210
41223230020120
524211331133
62445023120
7461644461
oct153541030
958106453
1028230168
1114a3181a
129554aa0
135b05555
143a6bd68
152729763
hex1aec218

28230168 has 32 divisors (see below), whose sum is σ = 71573760. Its totient is φ = 9276960.

The previous prime is 28230161. The next prime is 28230173. The reversal of 28230168 is 86103282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28230161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6580 + ... + 9987.

It is an arithmetic number, because the mean of its divisors is an integer number (2236680).

Almost surely, 228230168 is an apocalyptic number.

It is an amenable number.

28230168 is an abundant number, since it is smaller than the sum of its proper divisors (43343592).

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

28230168 is a wasteful number, since it uses less digits than its factorization.

28230168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16647 (or 16643 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 28230168 is about 5313.2069411985. The cubic root of 28230168 is about 304.4886819330.

The spelling of 28230168 in words is "twenty-eight million, two hundred thirty thousand, one hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 24 71 142 213 284 426 568 852 1704 16567 33134 49701 66268 99402 132536 198804 397608 1176257 2352514 3528771 4705028 7057542 9410056 14115084 28230168