Search a number
-
+
102868180 = 22541331379
BaseRepresentation
bin1100010000110…
…10010011010100
321011120020121121
412020122103110
5202313240210
614112453324
72356236142
oct610322324
9234506547
10102868180
1153080428
122a54a244
131840915c
14d93a592
15906e6da
hex621a4d4

102868180 has 48 divisors (see below), whose sum is σ = 222546240. Its totient is φ = 39916800.

The previous prime is 102868153. The next prime is 102868189. The reversal of 102868180 is 81868201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102868189) 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 15 ways as a sum of consecutive naturals, for example, 271231 + ... + 271609.

It is an arithmetic number, because the mean of its divisors is an integer number (4636380).

Almost surely, 2102868180 is an apocalyptic number.

102868180 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 102868180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111273120).

102868180 is an abundant number, since it is smaller than the sum of its proper divisors (119678060).

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

102868180 is a wasteful number, since it uses less digits than its factorization.

102868180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 102868180 is about 10142.3951806267. The cubic root of 102868180 is about 468.5547576821.

The spelling of 102868180 in words is "one hundred two million, eight hundred sixty-eight thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 41 82 164 205 331 379 410 662 758 820 1324 1516 1655 1895 3310 3790 6620 7580 13571 15539 27142 31078 54284 62156 67855 77695 125449 135710 155390 250898 271420 310780 501796 627245 1254490 2508980 5143409 10286818 20573636 25717045 51434090 102868180