Base | Representation |
---|---|
bin | 11011111101011010… |
… | …101100110011111011 |
3 | 2212111020122002202121 |
4 | 123331122230303323 |
5 | 442440442014330 |
6 | 21442555342111 |
7 | 2111650006252 |
oct | 337532546373 |
9 | 85436562677 |
10 | 30021438715 |
11 | 11806357284 |
12 | 599a151937 |
13 | 2aa5960328 |
14 | 164b229799 |
15 | baa96117a |
hex | 6fd6accfb |
30021438715 has 16 divisors (see below), whose sum is σ = 36627215040. Its totient is φ = 23617901440.
The previous prime is 30021438697. The next prime is 30021438749. The reversal of 30021438715 is 51783412003.
It is not a de Polignac number, because 30021438715 - 229 = 29484567803 is a prime.
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, 29397 + ... + 246793.
It is an arithmetic number, because the mean of its divisors is an integer number (2289200940).
Almost surely, 230021438715 is an apocalyptic number.
30021438715 is a deficient number, since it is larger than the sum of its proper divisors (6605776325).
30021438715 is a wasteful number, since it uses less digits than its factorization.
30021438715 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 217862.
The product of its (nonzero) digits is 20160, while the sum is 34.
The spelling of 30021438715 in words is "thirty billion, twenty-one million, four hundred thirty-eight thousand, seven hundred fifteen".
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