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120168 = 23321669
BaseRepresentation
bin11101010101101000
320002211200
4131111220
512321133
62324200
71010226
oct352550
9202750
10120168
1182314
1259660
1342909
1431b16
1525913
hex1d568

120168 has 24 divisors (see below), whose sum is σ = 325650. Its totient is φ = 40032.

The previous prime is 120167. The next prime is 120181. The reversal of 120168 is 861021.

It can be written as a sum of positive squares in only one way, i.e., 101124 + 19044 = 318^2 + 138^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a self number, because there is not a number n which added to its sum of digits gives 120168.

It is not an unprimeable number, because it can be changed into a prime (120163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 763 + ... + 906.

2120168 is an apocalyptic number.

120168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

120168 is an abundant number, since it is smaller than the sum of its proper divisors (205482).

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

120168 is a wasteful number, since it uses less digits than its factorization.

120168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681 (or 1674 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 120168 is about 346.6525638157. The cubic root of 120168 is about 49.3472487326.

Adding to 120168 its reverse (861021), we get a palindrome (981189).

The spelling of 120168 in words is "one hundred twenty thousand, one hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 1669 3338 5007 6676 10014 13352 15021 20028 30042 40056 60084 120168