Base | Representation |
---|---|
bin | 11011111100011100… |
… | …000110010010100101 |
3 | 2212110002202100111112 |
4 | 123330130012102211 |
5 | 442422241344010 |
6 | 21441211514405 |
7 | 2111360346521 |
oct | 337434062245 |
9 | 85402670445 |
10 | 30005028005 |
11 | 117a8068707 |
12 | 5994758a05 |
13 | 2aa2435854 |
14 | 1648d96d81 |
15 | ba92bda05 |
hex | 6fc7064a5 |
30005028005 has 16 divisors (see below), whose sum is σ = 38187448704. Its totient is φ = 22583964480.
The previous prime is 30005027993. The next prime is 30005028037. The reversal of 30005028005 is 50082050003.
It is not a de Polignac number, because 30005028005 - 228 = 29736592549 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (23).
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2131619 + ... + 2145648.
It is an arithmetic number, because the mean of its divisors is an integer number (2386715544).
Almost surely, 230005028005 is an apocalyptic number.
It is an amenable number.
30005028005 is a deficient number, since it is larger than the sum of its proper divisors (8182420699).
30005028005 is a wasteful number, since it uses less digits than its factorization.
30005028005 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4277356.
The product of its (nonzero) digits is 1200, while the sum is 23.
Adding to 30005028005 its reverse (50082050003), we get a palindrome (80087078008).
The spelling of 30005028005 in words is "thirty billion, five million, twenty-eight thousand, five".
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