Base | Representation |
---|---|
bin | 11001011100011… |
… | …01001001101000 |
3 | 112212121211101010 |
4 | 30232031021220 |
5 | 414120022310 |
6 | 33102423520 |
7 | 5201126241 |
oct | 1456151150 |
9 | 485554333 |
10 | 213439080 |
11 | aa531a38 |
12 | 5b591ba0 |
13 | 352b131a |
14 | 204bdcc8 |
15 | 13b11320 |
hex | cb8d268 |
213439080 has 128 divisors (see below), whose sum is σ = 707616000. Its totient is φ = 51228672.
The previous prime is 213439069. The next prime is 213439111. The reversal of 213439080 is 80934312.
It is a Harshad number since it is a multiple of its sum of digits (30).
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 31 ways as a sum of consecutive naturals, for example, 44646 + ... + 49194.
It is an arithmetic number, because the mean of its divisors is an integer number (5528250).
Almost surely, 2213439080 is an apocalyptic number.
213439080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 213439080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353808000).
213439080 is an abundant number, since it is smaller than the sum of its proper divisors (494176920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
213439080 is a wasteful number, since it uses less digits than its factorization.
213439080 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4603 (or 4599 counting only the distinct ones).
The product of its (nonzero) digits is 5184, while the sum is 30.
The square root of 213439080 is about 14609.5544079893. The cubic root of 213439080 is about 597.6193444023.
It can be divided in two parts, 2134 and 39080, that added together give a palindrome (41214).
The spelling of 213439080 in words is "two hundred thirteen million, four hundred thirty-nine thousand, eighty".
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