Base | Representation |
---|---|
bin | 11100011100101010… |
… | …110110100100010000 |
3 | 2220211210020201111120 |
4 | 130130222312210100 |
5 | 1000024204013142 |
6 | 22011005442240 |
7 | 2130644506221 |
oct | 343452664420 |
9 | 86753221446 |
10 | 30545766672 |
11 | 11a5531a673 |
12 | 5b05870380 |
13 | 2b5a482765 |
14 | 169ab15248 |
15 | bdb9d27ec |
hex | 71cab6910 |
30545766672 has 40 divisors (see below), whose sum is σ = 81455381760. Its totient is φ = 9853472640.
The previous prime is 30545766571. The next prime is 30545766677. The reversal of 30545766672 is 27666754503.
It is not an unprimeable number, because it can be changed into a prime (30545766677) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10262547 + ... + 10265522.
It is an arithmetic number, because the mean of its divisors is an integer number (2036384544).
Almost surely, 230545766672 is an apocalyptic number.
It is an amenable number.
30545766672 is an abundant number, since it is smaller than the sum of its proper divisors (50909615088).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30545766672 is a wasteful number, since it uses less digits than its factorization.
30545766672 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 20528111 (or 20528105 counting only the distinct ones).
The product of its (nonzero) digits is 6350400, while the sum is 51.
The spelling of 30545766672 in words is "thirty billion, five hundred forty-five million, seven hundred sixty-six thousand, six hundred seventy-two".
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