Base | Representation |
---|---|
bin | 101010000000100100… |
… | …0001010101001101001 |
3 | 22121212010002222100112 |
4 | 1110001020022221221 |
5 | 2434224041344314 |
6 | 105235434344105 |
7 | 6342365545613 |
oct | 1240110125151 |
9 | 277763088315 |
10 | 90213231209 |
11 | 35294020932 |
12 | 1559828b035 |
13 | 867905caaa |
14 | 451b365db3 |
15 | 252ee4b43e |
hex | 150120aa69 |
90213231209 has 8 divisors (see below), whose sum is σ = 91124015808. Its totient is φ = 89302791600.
The previous prime is 90213231137. The next prime is 90213231217.
90213231209 is nontrivially palindromic in base 10.
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 90213231209 - 212 = 90213227113 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (90213231259) by changing a digit.
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 7 ways as a sum of consecutive naturals, for example, 456524 + ... + 623570.
It is an arithmetic number, because the mean of its divisors is an integer number (11390501976).
Almost surely, 290213231209 is an apocalyptic number.
It is an amenable number.
90213231209 is a deficient number, since it is larger than the sum of its proper divisors (910784599).
90213231209 is a wasteful number, since it uses less digits than its factorization.
90213231209 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 172495.
The product of its (nonzero) digits is 5832, while the sum is 32.
The spelling of 90213231209 in words is "ninety billion, two hundred thirteen million, two hundred thirty-one thousand, two hundred nine".
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