Base | Representation |
---|---|
bin | 1111100001011… |
… | …10010101100100 |
3 | 100002000111221212 |
4 | 13300232111210 |
5 | 231313310340 |
6 | 20530530552 |
7 | 3140536244 |
oct | 760562544 |
9 | 302014855 |
10 | 130213220 |
11 | 67558135 |
12 | 37736a58 |
13 | 20c91857 |
14 | 13417b24 |
15 | b671a65 |
hex | 7c2e564 |
130213220 has 12 divisors (see below), whose sum is σ = 273447804. Its totient is φ = 52085280.
The previous prime is 130213211. The next prime is 130213231. The reversal of 130213220 is 22312031.
It is a happy number.
It can be written as a sum of positive squares in 2 ways, for example, as 43983424 + 86229796 = 6632^2 + 9286^2 .
It is a junction number, because it is equal to n+sod(n) for n = 130213195 and 130213204.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3255311 + ... + 3255350.
It is an arithmetic number, because the mean of its divisors is an integer number (22787317).
Almost surely, 2130213220 is an apocalyptic number.
130213220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
130213220 is an abundant number, since it is smaller than the sum of its proper divisors (143234584).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
130213220 is a wasteful number, since it uses less digits than its factorization.
130213220 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6510670 (or 6510668 counting only the distinct ones).
The product of its (nonzero) digits is 72, while the sum is 14.
The square root of 130213220 is about 11411.1007356872. The cubic root of 130213220 is about 506.8565068465.
Adding to 130213220 its reverse (22312031), we get a palindrome (152525251).
The spelling of 130213220 in words is "one hundred thirty million, two hundred thirteen thousand, two hundred twenty".
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