Base | Representation |
---|---|
bin | 1001010011011… |
… | …10101011000101 |
3 | 12102212020122111 |
4 | 10221232223011 |
5 | 124440013231 |
6 | 11424501021 |
7 | 1635253006 |
oct | 451565305 |
9 | 172766574 |
10 | 78047941 |
11 | 40068634 |
12 | 2217a771 |
13 | 13228a1a |
14 | a5191ad |
15 | 6cba4b1 |
hex | 4a6eac5 |
78047941 has 8 divisors (see below), whose sum is σ = 79395264. Its totient is φ = 76712160.
The previous prime is 78047939. The next prime is 78047989. The reversal of 78047941 is 14974087.
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 78047941 - 21 = 78047939 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 78047894 and 78047903.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (78047741) 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, 11346 + ... + 16876.
It is an arithmetic number, because the mean of its divisors is an integer number (9924408).
Almost surely, 278047941 is an apocalyptic number.
It is an amenable number.
78047941 is a deficient number, since it is larger than the sum of its proper divisors (1347323).
78047941 is a wasteful number, since it uses less digits than its factorization.
78047941 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5771.
The product of its (nonzero) digits is 56448, while the sum is 40.
The square root of 78047941 is about 8834.4745740763. The cubic root of 78047941 is about 427.3533867930.
The spelling of 78047941 in words is "seventy-eight million, forty-seven thousand, nine hundred forty-one".
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