Search a number
-
+
105048780 = 223517181569
BaseRepresentation
bin1100100001011…
…10101011001100
321022200000211120
412100232223030
5203343030110
614231320540
72413620444
oct620565314
9238600746
10105048780
115432a781
122b220150
13189c0855
14dd47124
159350870
hex642eacc

105048780 has 96 divisors (see below), whose sum is σ = 313709760. Its totient is φ = 26173440.

The previous prime is 105048761. The next prime is 105048793. The reversal of 105048780 is 87840501.

It is a happy number.

It is a super-2 number, since 2×1050487802 = 22070492358976800, which contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 184336 + ... + 184904.

It is an arithmetic number, because the mean of its divisors is an integer number (3267810).

Almost surely, 2105048780 is an apocalyptic number.

105048780 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 105048780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156854880).

105048780 is an abundant number, since it is smaller than the sum of its proper divisors (208660980).

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

105048780 is a wasteful number, since it uses less digits than its factorization.

105048780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 105048780 is about 10249.3307098561. The cubic root of 105048780 is about 471.8424435823.

The spelling of 105048780 in words is "one hundred five million, forty-eight thousand, seven hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 17 20 30 34 51 60 68 85 102 170 181 204 255 340 362 510 543 569 724 905 1020 1086 1138 1707 1810 2172 2276 2715 2845 3077 3414 3620 5430 5690 6154 6828 8535 9231 9673 10860 11380 12308 15385 17070 18462 19346 29019 30770 34140 36924 38692 46155 48365 58038 61540 92310 96730 102989 116076 145095 184620 193460 205978 290190 308967 411956 514945 580380 617934 1029890 1235868 1544835 1750813 2059780 3089670 3501626 5252439 6179340 7003252 8754065 10504878 17508130 21009756 26262195 35016260 52524390 105048780