Base | Representation |
---|---|
bin | 11001001001110… |
… | …10010010010000 |
3 | 112201001001000212 |
4 | 30210322102100 |
5 | 413004040022 |
6 | 32534303252 |
7 | 5141330450 |
oct | 1444722220 |
9 | 481031025 |
10 | 211002512 |
11 | a9118346 |
12 | 5a7b7b28 |
13 | 3493a276 |
14 | 20047d60 |
15 | 137ce3e2 |
hex | c93a490 |
211002512 has 40 divisors (see below), whose sum is σ = 467904576. Its totient is φ = 90297216.
The previous prime is 211002511. The next prime is 211002559. The reversal of 211002512 is 215200112.
It is a Harshad number since it is a multiple of its sum of digits (14).
It is not an unprimeable number, because it can be changed into a prime (211002511) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137783 + ... + 139305.
Almost surely, 2211002512 is an apocalyptic number.
It is an amenable number.
211002512 is an abundant number, since it is smaller than the sum of its proper divisors (256902064).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
211002512 is a wasteful number, since it uses less digits than its factorization.
211002512 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2775 (or 2769 counting only the distinct ones).
The product of its (nonzero) digits is 40, while the sum is 14.
The square root of 211002512 is about 14525.9255126825. The cubic root of 211002512 is about 595.3365438313.
Adding to 211002512 its reverse (215200112), we get a palindrome (426202624).
The spelling of 211002512 in words is "two hundred eleven million, two thousand, five hundred twelve".
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