Base | Representation |
---|---|
bin | 11001011000111… |
… | …01001000011011 |
3 | 112211202111222110 |
4 | 30230131020123 |
5 | 414010332001 |
6 | 33044523403 |
7 | 5164205451 |
oct | 1454351033 |
9 | 484674873 |
10 | 212980251 |
11 | aa249240 |
12 | 5b3b0563 |
13 | 35180523 |
14 | 204009d1 |
15 | 13a703d6 |
hex | cb1d21b |
212980251 has 16 divisors (see below), whose sum is σ = 318163968. Its totient is φ = 125589600.
The previous prime is 212980237. The next prime is 212980259. The reversal of 212980251 is 152089212.
212980251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 212980251 - 217 = 212849179 is a prime.
It is not an unprimeable number, because it can be changed into a prime (212980259) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85995 + ... + 88436.
It is an arithmetic number, because the mean of its divisors is an integer number (19885248).
Almost surely, 2212980251 is an apocalyptic number.
212980251 is a deficient number, since it is larger than the sum of its proper divisors (105183717).
212980251 is a wasteful number, since it uses less digits than its factorization.
212980251 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 174482.
The product of its (nonzero) digits is 2880, while the sum is 30.
The square root of 212980251 is about 14593.8429140511. The cubic root of 212980251 is about 597.1908040010.
The spelling of 212980251 in words is "two hundred twelve million, nine hundred eighty thousand, two hundred fifty-one".
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