Base | Representation |
---|---|
bin | 11011111110110101… |
… | …110010000101011101 |
3 | 2212112220120011110001 |
4 | 123332311302011131 |
5 | 443013100043141 |
6 | 21445211214301 |
7 | 2112356652532 |
oct | 337665620535 |
9 | 85486504401 |
10 | 30045315421 |
11 | 118188851a0 |
12 | 59a6147391 |
13 | 2aaa8a0164 |
14 | 1650482d89 |
15 | bacacaa31 |
hex | 6fed7215d |
30045315421 has 8 divisors (see below), whose sum is σ = 32870628000. Its totient is φ = 27235656240.
The previous prime is 30045315401. The next prime is 30045315427. The reversal of 30045315421 is 12451354003.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 30045315421 - 29 = 30045314909 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 30045315421.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30045315427) 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, 3909331 + ... + 3917008.
It is an arithmetic number, because the mean of its divisors is an integer number (4108828500).
Almost surely, 230045315421 is an apocalyptic number.
It is an amenable number.
30045315421 is a deficient number, since it is larger than the sum of its proper divisors (2825312579).
30045315421 is a wasteful number, since it uses less digits than its factorization.
30045315421 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7826699.
The product of its (nonzero) digits is 7200, while the sum is 28.
Adding to 30045315421 its reverse (12451354003), we get a palindrome (42496669424).
The spelling of 30045315421 in words is "thirty billion, forty-five million, three hundred fifteen thousand, four hundred twenty-one".
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