Base | Representation |
---|---|
bin | 1001010101011… |
… | …00010000101101 |
3 | 12110100001200121 |
4 | 10222230100231 |
5 | 130021101310 |
6 | 11434124541 |
7 | 1640353324 |
oct | 452542055 |
9 | 173301617 |
10 | 78300205 |
11 | 40220115 |
12 | 22280751 |
13 | 132b67a9 |
14 | a5830bb |
15 | 6d1a0da |
hex | 4aac42d |
78300205 has 8 divisors (see below), whose sum is σ = 96145632. Its totient is φ = 61183248.
The previous prime is 78300193. The next prime is 78300223. The reversal of 78300205 is 50200387.
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 78300205 - 29 = 78299693 is a prime.
It is a super-2 number, since 2×783002052 = 12261844206084050, which contains 22 as substring.
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 78300205.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181879 + ... + 182308.
It is an arithmetic number, because the mean of its divisors is an integer number (12018204).
Almost surely, 278300205 is an apocalyptic number.
It is an amenable number.
78300205 is a deficient number, since it is larger than the sum of its proper divisors (17845427).
78300205 is a wasteful number, since it uses less digits than its factorization.
78300205 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 364235.
The product of its (nonzero) digits is 1680, while the sum is 25.
The square root of 78300205 is about 8848.7403058288. The cubic root of 78300205 is about 427.8133174998.
The spelling of 78300205 in words is "seventy-eight million, three hundred thousand, two hundred five".
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