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105868 = 22719199
BaseRepresentation
bin11001110110001100
312101020001
4121312030
511341433
62134044
7620440
oct316614
9171201
10105868
11725a4
1251324
1339259
142a820
152157d
hex19d8c

105868 has 24 divisors (see below), whose sum is σ = 224000. Its totient is φ = 42768.

The previous prime is 105863. The next prime is 105871. The reversal of 105868 is 868501.

It is a happy number.

It is a super-2 number, since 2×1058682 = 22416066848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (105863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433 + ... + 631.

2105868 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 105868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112000).

105868 is an abundant number, since it is smaller than the sum of its proper divisors (118132).

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

105868 is a wasteful number, since it uses less digits than its factorization.

105868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 105868 is about 325.3736313840. The cubic root of 105868 is about 47.3065818993.

The spelling of 105868 in words is "one hundred five thousand, eight hundred sixty-eight".

Divisors: 1 2 4 7 14 19 28 38 76 133 199 266 398 532 796 1393 2786 3781 5572 7562 15124 26467 52934 105868