Base | Representation |
---|---|
bin | 11001011001101… |
… | …11001100100000 |
3 | 112211221221102102 |
4 | 30230313030200 |
5 | 414022241013 |
6 | 33051105532 |
7 | 5165131631 |
oct | 1454671440 |
9 | 484857372 |
10 | 213087008 |
11 | aa311472 |
12 | 5b4422a8 |
13 | 351b9cb4 |
14 | 2042b888 |
15 | 13a91d58 |
hex | cb37320 |
213087008 has 12 divisors (see below), whose sum is σ = 419515110. Its totient is φ = 106543488.
The previous prime is 213086941. The next prime is 213087013. The reversal of 213087008 is 800780312.
It can be written as a sum of positive squares in only one way, i.e., 131148304 + 81938704 = 11452^2 + 9052^2 .
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3329453 + ... + 3329516.
Almost surely, 2213087008 is an apocalyptic number.
It is an amenable number.
213087008 is a deficient number, since it is larger than the sum of its proper divisors (206428102).
213087008 is an equidigital number, since it uses as much as digits as its factorization.
213087008 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6658979 (or 6658971 counting only the distinct ones).
The product of its (nonzero) digits is 2688, while the sum is 29.
The square root of 213087008 is about 14597.5000599418. The cubic root of 213087008 is about 597.2905685707.
The spelling of 213087008 in words is "two hundred thirteen million, eighty-seven thousand, eight".
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