Base | Representation |
---|---|
bin | 110001101011… |
… | …101001000000 |
3 | 220111200022021 |
4 | 301223221000 |
5 | 11313230213 |
6 | 1143051224 |
7 | 215462200 |
oct | 61535100 |
9 | 26450267 |
10 | 13023808 |
11 | 7395a86 |
12 | 4440b14 |
13 | 290ccc5 |
14 | 1a30400 |
15 | 1223d8d |
hex | c6ba40 |
13023808 has 42 divisors (see below), whose sum is σ = 30070806. Its totient is φ = 5580288.
The previous prime is 13023793. The next prime is 13023809. The reversal of 13023808 is 80832031.
It can be written as a sum of positive squares in only one way, i.e., 7225344 + 5798464 = 2688^2 + 2408^2 .
It is not an unprimeable number, because it can be changed into a prime (13023809) 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, 1060 + ... + 5212.
Almost surely, 213023808 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 13023808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15035403).
13023808 is an abundant number, since it is smaller than the sum of its proper divisors (17046998).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13023808 is an equidigital number, since it uses as much as digits as its factorization.
13023808 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4179 (or 4162 counting only the distinct ones).
The product of its (nonzero) digits is 1152, while the sum is 25.
The square root of 13023808 is about 3608.8513408008. The cubic root of 13023808 is about 235.2769211746.
Adding to 13023808 its reverse (80832031), we get a palindrome (93855839).
It can be divided in two parts, 13023 and 808, that added together give a palindrome (13831).
The spelling of 13023808 in words is "thirteen million, twenty-three thousand, eight hundred eight".
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