Base | Representation |
---|---|
bin | 11100110100011110… |
… | …100000010010000111 |
3 | 2221212121211011111112 |
4 | 130310132200102013 |
5 | 1001333431322410 |
6 | 22114354355235 |
7 | 2143564466666 |
oct | 346436402207 |
9 | 87777734445 |
10 | 30945182855 |
11 | 1213a826994 |
12 | 5bb758bb1b |
13 | 2bc214b3b2 |
14 | 16d7ba6ddd |
15 | c11acd105 |
hex | 7347a0487 |
30945182855 has 32 divisors (see below), whose sum is σ = 38635860480. Its totient is φ = 23768432640.
The previous prime is 30945182809. The next prime is 30945182857. The reversal of 30945182855 is 55828154903.
It is not a de Polignac number, because 30945182855 - 224 = 30928405639 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30945182857) 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, 12952001 + ... + 12954389.
It is an arithmetic number, because the mean of its divisors is an integer number (1207370640).
Almost surely, 230945182855 is an apocalyptic number.
30945182855 is a deficient number, since it is larger than the sum of its proper divisors (7690677625).
30945182855 is a wasteful number, since it uses less digits than its factorization.
30945182855 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3051.
The product of its (nonzero) digits is 1728000, while the sum is 50.
The spelling of 30945182855 in words is "thirty billion, nine hundred forty-five million, one hundred eighty-two thousand, eight hundred fifty-five".
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