Base | Representation |
---|---|
bin | 11001011001010… |
… | …00000011110111 |
3 | 112211211210101101 |
4 | 30230220003313 |
5 | 414013300030 |
6 | 33045510531 |
7 | 5164453120 |
oct | 1454500367 |
9 | 484753341 |
10 | 213025015 |
11 | aa279935 |
12 | 5b412447 |
13 | 35197a08 |
14 | 20413047 |
15 | 13a7d7ca |
hex | cb280f7 |
213025015 has 8 divisors (see below), whose sum is σ = 292148640. Its totient is φ = 146074272.
The previous prime is 213025013. The next prime is 213025019. The reversal of 213025015 is 510520312.
213025015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 213025015 - 21 = 213025013 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 213024983 and 213025001.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (213025013) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3043180 + ... + 3043249.
It is an arithmetic number, because the mean of its divisors is an integer number (36518580).
Almost surely, 2213025015 is an apocalyptic number.
213025015 is a deficient number, since it is larger than the sum of its proper divisors (79123625).
213025015 is an equidigital number, since it uses as much as digits as its factorization.
213025015 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6086441.
The product of its (nonzero) digits is 300, while the sum is 19.
The square root of 213025015 is about 14595.3764939449. The cubic root of 213025015 is about 597.2326400811.
Adding to 213025015 its reverse (510520312), we get a palindrome (723545327).
The spelling of 213025015 in words is "two hundred thirteen million, twenty-five thousand, fifteen".
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