Base | Representation |
---|---|
bin | 1111100011101… |
… | …10011111110001 |
3 | 100002120112101201 |
4 | 13301312133301 |
5 | 231402240120 |
6 | 20541131201 |
7 | 3143210041 |
oct | 761663761 |
9 | 302515351 |
10 | 130508785 |
11 | 6773a200 |
12 | 37859b01 |
13 | 21066244 |
14 | 13493721 |
15 | b6ce40a |
hex | 7c767f1 |
130508785 has 48 divisors (see below), whose sum is σ = 183399552. Its totient is φ = 88901120.
The previous prime is 130508773. The next prime is 130508789. The reversal of 130508785 is 587805031.
It is not a de Polignac number, because 130508785 - 211 = 130506737 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (130508789) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1154889 + ... + 1155001.
It is an arithmetic number, because the mean of its divisors is an integer number (3820824).
Almost surely, 2130508785 is an apocalyptic number.
It is an amenable number.
130508785 is a deficient number, since it is larger than the sum of its proper divisors (52890767).
130508785 is a wasteful number, since it uses less digits than its factorization.
130508785 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 246 (or 235 counting only the distinct ones).
The product of its (nonzero) digits is 33600, while the sum is 37.
The square root of 130508785 is about 11424.0441613292. The cubic root of 130508785 is about 507.2397138100.
The spelling of 130508785 in words is "one hundred thirty million, five hundred eight thousand, seven hundred eighty-five".
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