Base | Representation |
---|---|
bin | 11011111110110101… |
… | …010110000000100101 |
3 | 2212112220100022200210 |
4 | 123332311112000211 |
5 | 443013032403141 |
6 | 21445204530033 |
7 | 2112355663335 |
oct | 337665260045 |
9 | 85486308623 |
10 | 30045200421 |
11 | 11818806855 |
12 | 59a60b0919 |
13 | 2aaa85ca02 |
14 | 16504530c5 |
15 | bacaa6916 |
hex | 6fed56025 |
30045200421 has 8 divisors (see below), whose sum is σ = 40120875424. Its totient is φ = 19999829520.
The previous prime is 30045200417. The next prime is 30045200443. The reversal of 30045200421 is 12400254003.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30045200421 - 22 = 30045200417 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30045200491) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7573711 + ... + 7577676.
It is an arithmetic number, because the mean of its divisors is an integer number (5015109428).
Almost surely, 230045200421 is an apocalyptic number.
It is an amenable number.
30045200421 is a deficient number, since it is larger than the sum of its proper divisors (10075675003).
30045200421 is a wasteful number, since it uses less digits than its factorization.
30045200421 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 15152051.
The product of its (nonzero) digits is 960, while the sum is 21.
Adding to 30045200421 its reverse (12400254003), we get a palindrome (42445454424).
The spelling of 30045200421 in words is "thirty billion, forty-five million, two hundred thousand, four hundred twenty-one".
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