Base | Representation |
---|---|
bin | 101000011111… |
… | …1101010101110 |
3 | 1110221201020120 |
4 | 1100333222232 |
5 | 20413413202 |
6 | 2035025410 |
7 | 345320520 |
oct | 120775256 |
9 | 43851216 |
10 | 21232302 |
11 | 10a92163 |
12 | 713b266 |
13 | 45252c0 |
14 | 2b69a10 |
15 | 1ce60bc |
hex | 143faae |
21232302 has 64 divisors (see below), whose sum is σ = 53727744. Its totient is φ = 5443200.
The previous prime is 21232259. The next prime is 21232307. The reversal of 21232302 is 20323212.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (21232307) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19677 + ... + 20727.
It is an arithmetic number, because the mean of its divisors is an integer number (839496).
Almost surely, 221232302 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 21232302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26863872).
21232302 is an abundant number, since it is smaller than the sum of its proper divisors (32495442).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21232302 is a wasteful number, since it uses less digits than its factorization.
21232302 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1113.
The product of its (nonzero) digits is 144, while the sum is 15.
The square root of 21232302 is about 4607.8522111717. The cubic root of 21232302 is about 276.9059966792.
Adding to 21232302 its reverse (20323212), we get a palindrome (41555514).
The spelling of 21232302 in words is "twenty-one million, two hundred thirty-two thousand, three hundred two".
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