Search a number
308808 = 23324289
BaseRepresentation
bin1001011011001001000
3120200121100
41023121020
534340213
610341400
72424213
oct1133110
9520540
10308808
111a1015
1212a860
13aa736
148077a
1561773
hex4b648

308808 has 24 divisors (see below), whose sum is σ = 836550. Its totient is φ = 102912.

The previous prime is 308801. The next prime is 308809. The reversal of 308808 is 808803.

It can be written as a sum of positive squares in only one way, i.e., 191844 + 116964 = 438^2 + 342^2 .

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 308808.

It is not an unprimeable number, because it can be changed into a prime (308801) by changing a digit.

308808 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2073 + ... + 2216.

2308808 is an apocalyptic number.

It is an amenable number.

308808 is an abundant number, since it is smaller than the sum of its proper divisors (527742).

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

308808 is a wasteful number, since it uses less digits than its factorization.

308808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4301 (or 4294 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 308808 is about 555.7049576889. The cubic root of 308808 is about 67.5921375494.

The spelling of 308808 in words is "three hundred eight thousand, eight hundred eight".