Base | Representation |
---|---|
bin | 11011111100100100… |
… | …010001111001101000 |
3 | 2212110020210022111010 |
4 | 123330210101321220 |
5 | 442423314011322 |
6 | 21441325503520 |
7 | 2111414521356 |
oct | 337444217150 |
9 | 85406708433 |
10 | 30007172712 |
11 | 117a92a2aa0 |
12 | 5995411ba0 |
13 | 2aa2a06aca |
14 | 16493947d6 |
15 | ba959420c |
hex | 6fc911e68 |
30007172712 has 64 divisors (see below), whose sum is σ = 82681502400. Its totient is φ = 8999331840.
The previous prime is 30007172711. The next prime is 30007172731. The reversal of 30007172712 is 21727170003.
It is a self number, because there is not a number n which added to its sum of digits gives 30007172712.
It is not an unprimeable number, because it can be changed into a prime (30007172711) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 560287 + ... + 611502.
It is an arithmetic number, because the mean of its divisors is an integer number (1291898475).
Almost surely, 230007172712 is an apocalyptic number.
It is an amenable number.
30007172712 is an abundant number, since it is smaller than the sum of its proper divisors (52674329688).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30007172712 is a wasteful number, since it uses less digits than its factorization.
30007172712 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1171906 (or 1171902 counting only the distinct ones).
The product of its (nonzero) digits is 4116, while the sum is 30.
The spelling of 30007172712 in words is "thirty billion, seven million, one hundred seventy-two thousand, seven hundred twelve".
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