Base | Representation |
---|---|
bin | 11001010011011… |
… | …01111000001000 |
3 | 112210102001021200 |
4 | 30221231320020 |
5 | 413314344113 |
6 | 33021304200 |
7 | 5155125561 |
oct | 1451557010 |
9 | 483361250 |
10 | 212262408 |
11 | a98a8986 |
12 | 5b105060 |
13 | 34c8b877 |
14 | 20295168 |
15 | 1397c873 |
hex | ca6de08 |
212262408 has 108 divisors (see below), whose sum is σ = 616789095. Its totient is φ = 65932800.
The previous prime is 212262389. The next prime is 212262431. The reversal of 212262408 is 804262212.
It is a happy number.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
It can be written as a sum of positive squares in 5 ways, for example, as 210308004 + 1954404 = 14502^2 + 1398^2 .
It is an ABA number since it can be written as A⋅BA, here for A=2, B=10302.
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 in 26 ways as a sum of consecutive naturals, for example, 2101558 + ... + 2101658.
Almost surely, 2212262408 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 212262408
212262408 is an abundant number, since it is smaller than the sum of its proper divisors (404526687).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
212262408 is a wasteful number, since it uses less digits than its factorization.
212262408 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 248 (or 123 counting only the distinct ones).
The product of its (nonzero) digits is 3072, while the sum is 27.
The square root of 212262408 is about 14569.2281195676. The cubic root of 212262408 is about 596.5191114100.
The spelling of 212262408 in words is "two hundred twelve million, two hundred sixty-two thousand, four hundred eight".
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