Base | Representation |
---|---|
bin | 11111000000011… |
… | …101001110110110 |
3 | 1100020212120200002 |
4 | 133000131032312 |
5 | 2031133312210 |
6 | 123341551302 |
7 | 15614512142 |
oct | 3700351666 |
9 | 1306776602 |
10 | 520213430 |
11 | 247713060 |
12 | 126275532 |
13 | 83a116c9 |
14 | 4d138222 |
15 | 30a0c4a5 |
hex | 1f01d3b6 |
520213430 has 64 divisors (see below), whose sum is σ = 1086524928. Its totient is φ = 177231360.
The previous prime is 520213427. The next prime is 520213439. The reversal of 520213430 is 34312025.
It is a happy number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (520213439) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 528719 + ... + 529701.
It is an arithmetic number, because the mean of its divisors is an integer number (16976952).
Almost surely, 2520213430 is an apocalyptic number.
520213430 is an abundant number, since it is smaller than the sum of its proper divisors (566311498).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
520213430 is a wasteful number, since it uses less digits than its factorization.
520213430 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1301.
The product of its (nonzero) digits is 720, while the sum is 20.
The square root of 520213430 is about 22808.1877842147. The cubic root of 520213430 is about 804.2551550664.
Adding to 520213430 its reverse (34312025), we get a palindrome (554525455).
The spelling of 520213430 in words is "five hundred twenty million, two hundred thirteen thousand, four hundred thirty".
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