Base | Representation |
---|---|
bin | 1111100111000010… |
… | …00001010101110001 |
3 | 210122001100211222100 |
4 | 13303201001111301 |
5 | 114130401041100 |
6 | 3503330531013 |
7 | 414450651531 |
oct | 76341012561 |
9 | 23561324870 |
10 | 8380487025 |
11 | 3610625a39 |
12 | 175a736a69 |
13 | a37311b81 |
14 | 59702d4c1 |
15 | 340b07400 |
hex | 1f3841571 |
8380487025 has 81 divisors (see below), whose sum is σ = 15989825761. Its totient is φ = 4194958080.
The previous prime is 8380486993. The next prime is 8380487039. The reversal of 8380487025 is 5207840838.
The square root of 8380487025 is 91545.
It is a perfect power (a square), and thus also a powerful number.
8380487025 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 4 ways, for example, as 196028001 + 8184459024 = 14001^2 + 90468^2 .
It is not a de Polignac number, because 8380487025 - 25 = 8380486993 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 23343796 + ... + 23344154.
Almost surely, 28380487025 is an apocalyptic number.
8380487025 is a gapful number since it is divisible by the number (85) formed by its first and last digit.
8380487025 is the 91545-th square number.
8380487025 is the 45773-rd centered octagonal number.
It is an amenable number.
8380487025 is a deficient number, since it is larger than the sum of its proper divisors (7609338736).
8380487025 is a wasteful number, since it uses less digits than its factorization.
8380487025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 768 (or 384 counting only the distinct ones).
The product of its (nonzero) digits is 430080, while the sum is 45.
The cubic root of 8380487025 is about 2031.2174522280.
The spelling of 8380487025 in words is "eight billion, three hundred eighty million, four hundred eighty-seven thousand, twenty-five".
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