Base | Representation |
---|---|
bin | 11100010100011100… |
… | …011001000110000001 |
3 | 2220111011120011111000 |
4 | 130110130121012001 |
5 | 444233341230314 |
6 | 21545155442213 |
7 | 2124350452203 |
oct | 342434310601 |
9 | 86434504430 |
10 | 30407758209 |
11 | 11994428894 |
12 | 5a875b6369 |
13 | 2b379c1a4a |
14 | 168666c773 |
15 | bce821209 |
hex | 714719181 |
30407758209 has 64 divisors (see below), whose sum is σ = 46290042880. Its totient is φ = 19722890880.
The previous prime is 30407758141. The next prime is 30407758217. The reversal of 30407758209 is 90285770403.
30407758209 is a `hidden beast` number, since 30 + 407 + 7 + 5 + 8 + 209 = 666.
It is not a de Polignac number, because 30407758209 - 27 = 30407758081 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30407758219) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 82854744 + ... + 82855110.
It is an arithmetic number, because the mean of its divisors is an integer number (723281920).
Almost surely, 230407758209 is an apocalyptic number.
It is an amenable number.
30407758209 is a deficient number, since it is larger than the sum of its proper divisors (15882284671).
30407758209 is a wasteful number, since it uses less digits than its factorization.
30407758209 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 907 (or 901 counting only the distinct ones).
The product of its (nonzero) digits is 423360, while the sum is 45.
The spelling of 30407758209 in words is "thirty billion, four hundred seven million, seven hundred fifty-eight thousand, two hundred nine".
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