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105720895968 = 2539781113999
BaseRepresentation
bin110001001110101110…
…1001101100111100000
3101002212212111222011120
41202131131031213200
53213004022132333
6120322325412240
710431601534332
oct1423535154740
9332785458146
10105720895968
11409217649a6
12185a586a080
139c7ab1589c
14518cb79452
152b3b5dedb3
hex189d74d9e0

105720895968 has 96 divisors (see below), whose sum is σ = 280744128000. Its totient is φ = 34831503360.

The previous prime is 105720895933. The next prime is 105720895979. The reversal of 105720895968 is 869598027501.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1057208959682 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7545033 + ... + 7559031.

It is an arithmetic number, because the mean of its divisors is an integer number (2924418000).

Almost surely, 2105720895968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 105720895968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140372064000).

105720895968 is an abundant number, since it is smaller than the sum of its proper divisors (175023232032).

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

105720895968 is a wasteful number, since it uses less digits than its factorization.

105720895968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14920 (or 14912 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 60.

The spelling of 105720895968 in words is "one hundred five billion, seven hundred twenty million, eight hundred ninety-five thousand, nine hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 97 194 291 388 582 776 811 1164 1552 1622 2328 2433 3104 3244 4656 4866 6488 9312 9732 12976 13999 19464 25952 27998 38928 41997 55996 77856 78667 83994 111992 157334 167988 223984 236001 314668 335976 447968 472002 629336 671952 944004 1258672 1343904 1357903 1888008 2517344 2715806 3776016 4073709 5431612 7552032 8147418 10863224 11353189 16294836 21726448 22706378 32589672 34059567 43452896 45412756 65179344 68119134 90825512 130358688 136238268 181651024 272476536 363302048 544953072 1089906144 1101259333 2202518666 3303777999 4405037332 6607555998 8810074664 13215111996 17620149328 26430223992 35240298656 52860447984 105720895968