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120808 = 2315101
BaseRepresentation
bin11101011111101000
320010201101
4131133220
512331213
62331144
71012132
oct353750
9203641
10120808
1182846
1259ab4
1342cac
1432052
1525bdd
hex1d7e8

120808 has 8 divisors (see below), whose sum is σ = 226530. Its totient is φ = 60400.

The previous prime is 120779. The next prime is 120811. The reversal of 120808 is 808021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 116964 + 3844 = 342^2 + 62^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 15.

It is an unprimeable number.

120808 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 7543 + ... + 7558.

2120808 is an apocalyptic number.

It is an amenable number.

120808 is a deficient number, since it is larger than the sum of its proper divisors (105722).

120808 is a wasteful number, since it uses less digits than its factorization.

120808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15107 (or 15103 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 120808 is about 347.5744524559. The cubic root of 120808 is about 49.4346994593.

Adding to 120808 its reverse (808021), we get a palindrome (928829).

The spelling of 120808 in words is "one hundred twenty thousand, eight hundred eight".

Divisors: 1 2 4 8 15101 30202 60404 120808