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52143210 = 2335747587
BaseRepresentation
bin1100011011101…
…0010001101010
310122010011001000
43012322101222
5101322040320
65101335430
71202132010
oct306722152
9118104030
1052143210
1127484a69
1215567576
13aa58a92
146cd48b0
15489ec90
hex31ba46a

52143210 has 128 divisors (see below), whose sum is σ = 162570240. Its totient is φ = 11644992.

The previous prime is 52143187. The next prime is 52143241. The reversal of 52143210 is 1234125.

52143210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 88537 + ... + 89123.

It is an arithmetic number, because the mean of its divisors is an integer number (1270080).

Almost surely, 252143210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52143210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81285120).

52143210 is an abundant number, since it is smaller than the sum of its proper divisors (110427030).

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

52143210 is a wasteful number, since it uses less digits than its factorization.

52143210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 651 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 52143210 is about 7221.0255504326. The cubic root of 52143210 is about 373.5934509151.

Adding to 52143210 its reverse (1234125), we get a palindrome (53377335).

The spelling of 52143210 in words is "fifty-two million, one hundred forty-three thousand, two hundred ten".

Divisors: 1 2 3 5 6 7 9 10 14 15 18 21 27 30 35 42 45 47 54 63 70 90 94 105 126 135 141 189 210 235 270 282 315 329 378 423 470 587 630 658 705 846 945 987 1174 1269 1410 1645 1761 1890 1974 2115 2538 2935 2961 3290 3522 4109 4230 4935 5283 5870 5922 6345 8218 8805 8883 9870 10566 12327 12690 14805 15849 17610 17766 20545 24654 26415 27589 29610 31698 36981 41090 44415 52830 55178 61635 73962 79245 82767 88830 110943 123270 137945 158490 165534 184905 193123 221886 248301 275890 369810 386246 413835 496602 554715 579369 744903 827670 965615 1109430 1158738 1241505 1489806 1738107 1931230 2483010 2896845 3476214 3724515 5214321 5793690 7449030 8690535 10428642 17381070 26071605 52143210