Base | Representation |
---|---|
bin | 11011111111011011… |
… | …110010111101111001 |
3 | 2212120121022102222020 |
4 | 123333123302331321 |
5 | 443023122434010 |
6 | 21450204545053 |
7 | 2112540445335 |
oct | 337733627571 |
9 | 85517272866 |
10 | 30055280505 |
11 | 118234710a8 |
12 | 59a9552189 |
13 | 2aac97bb63 |
14 | 16519187c5 |
15 | bad8e8470 |
hex | 6ff6f2f79 |
30055280505 has 32 divisors (see below), whose sum is σ = 48391862400. Its totient is φ = 15928476672.
The previous prime is 30055280503. The next prime is 30055280539. The reversal of 30055280505 is 50508255003.
It is not a de Polignac number, because 30055280505 - 21 = 30055280503 is a prime.
It is not an unprimeable number, because it can be changed into a prime (30055280503) 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, 4800337 + ... + 4806593.
It is an arithmetic number, because the mean of its divisors is an integer number (1512245700).
Almost surely, 230055280505 is an apocalyptic number.
It is an amenable number.
30055280505 is a deficient number, since it is larger than the sum of its proper divisors (18336581895).
30055280505 is a wasteful number, since it uses less digits than its factorization.
30055280505 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8233.
The product of its (nonzero) digits is 30000, while the sum is 33.
The spelling of 30055280505 in words is "thirty billion, fifty-five million, two hundred eighty thousand, five hundred five".
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