Search a number
-
+
168808 = 2321101
BaseRepresentation
bin101001001101101000
322120120011
4221031220
520400213
63341304
71302103
oct511550
9276504
10168808
11105912
1281834
135bab3
144573a
153503d
hex29368

168808 has 8 divisors (see below), whose sum is σ = 316530. Its totient is φ = 84400.

The previous prime is 168803. The next prime is 168851. The reversal of 168808 is 808861.

It can be written as a sum of positive squares in only one way, i.e., 158404 + 10404 = 398^2 + 102^2 .

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

It is a super-2 number, since 2×1688082 = 56992281728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 168808.

It is not an unprimeable number, because it can be changed into a prime (168803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10543 + ... + 10558.

2168808 is an apocalyptic number.

It is an amenable number.

168808 is a deficient number, since it is larger than the sum of its proper divisors (147722).

168808 is a wasteful number, since it uses less digits than its factorization.

168808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21107 (or 21103 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 168808 is about 410.8625074158. The cubic root of 168808 is about 55.2668028308.

The spelling of 168808 in words is "one hundred sixty-eight thousand, eight hundred eight".

Divisors: 1 2 4 8 21101 42202 84404 168808