Base | Representation |
---|---|
bin | 111010000000… |
… | …111011000010 |
3 | 1001121122122002 |
4 | 322000323002 |
5 | 12343130010 |
6 | 1301544002 |
7 | 243160400 |
oct | 72007302 |
9 | 31548562 |
10 | 15208130 |
11 | 8648103 |
12 | 5115002 |
13 | 31c62c2 |
14 | 203c470 |
15 | 15061a5 |
hex | e80ec2 |
15208130 has 48 divisors (see below), whose sum is σ = 32663736. Its totient is φ = 5080320.
The previous prime is 15208121. The next prime is 15208139. The reversal of 15208130 is 3180251.
It is an interprime number because it is at equal distance from previous prime (15208121) and next prime (15208139).
It can be written as a sum of positive squares in 4 ways, for example, as 9102289 + 6105841 = 3017^2 + 2471^2 .
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (15208139) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19712 + ... + 20468.
Almost surely, 215208130 is an apocalyptic number.
15208130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
15208130 is an abundant number, since it is smaller than the sum of its proper divisors (17455606).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15208130 is a wasteful number, since it uses less digits than its factorization.
15208130 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 819 (or 812 counting only the distinct ones).
The product of its (nonzero) digits is 240, while the sum is 20.
The square root of 15208130 is about 3899.7602490410. The cubic root of 15208130 is about 247.7566225795.
Adding to 15208130 its reverse (3180251), we get a palindrome (18388381).
The spelling of 15208130 in words is "fifteen million, two hundred eight thousand, one hundred thirty".
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