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102512160 = 25325257277
BaseRepresentation
bin1100001110000…
…11011000100000
321010220011020200
412013003120200
5202220342120
614101105200
72353224162
oct607033040
9233804220
10102512160
11529579a3
122a3b8200
13183130aa
14d886932
158eede90
hex61c3620

102512160 has 144 divisors (see below), whose sum is σ = 352451736. Its totient is φ = 27131904.

The previous prime is 102512117. The next prime is 102512161. The reversal of 102512160 is 61215201.

It can be written as a sum of positive squares in 4 ways, for example, as 92852496 + 9659664 = 9636^2 + 3108^2 .

It is a tau number, because it is divible by the number of its divisors (144).

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

It is not an unprimeable number, because it can be changed into a prime (102512161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 369942 + ... + 370218.

Almost surely, 2102512160 is an apocalyptic number.

102512160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102512160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176225868).

102512160 is an abundant number, since it is smaller than the sum of its proper divisors (249939576).

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

102512160 is a wasteful number, since it uses less digits than its factorization.

102512160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 102512160 is about 10124.8288874430. The cubic root of 102512160 is about 468.0135871576.

Adding to 102512160 its reverse (61215201), we get a palindrome (163727361).

The spelling of 102512160 in words is "one hundred two million, five hundred twelve thousand, one hundred sixty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 72 80 90 96 120 144 160 180 240 257 277 288 360 480 514 554 720 771 831 1028 1108 1285 1385 1440 1542 1662 2056 2216 2313 2493 2570 2770 3084 3324 3855 4112 4155 4432 4626 4986 5140 5540 6168 6648 7710 8224 8310 8864 9252 9972 10280 11080 11565 12336 12465 13296 15420 16620 18504 19944 20560 22160 23130 24672 24930 26592 30840 33240 37008 39888 41120 44320 46260 49860 61680 66480 71189 74016 79776 92520 99720 123360 132960 142378 185040 199440 213567 284756 355945 370080 398880 427134 569512 640701 711890 854268 1067835 1139024 1281402 1423780 1708536 2135670 2278048 2562804 2847560 3203505 3417072 4271340 5125608 5695120 6407010 6834144 8542680 10251216 11390240 12814020 17085360 20502432 25628040 34170720 51256080 102512160