Base | Representation |
---|---|
bin | 1001011001110… |
… | …10101110011101 |
3 | 12111102201011001 |
4 | 10230322232131 |
5 | 130143234431 |
6 | 11454430301 |
7 | 1645333516 |
oct | 454725635 |
9 | 174381131 |
10 | 78883741 |
11 | 40589582 |
12 | 22502391 |
13 | 1345c291 |
14 | a695a0d |
15 | 6dd2e61 |
hex | 4b3ab9d |
78883741 has 8 divisors (see below), whose sum is σ = 83810520. Its totient is φ = 74104128.
The previous prime is 78883733. The next prime is 78883771. The reversal of 78883741 is 14738887.
It can be written as a sum of positive squares in 4 ways, for example, as 48358116 + 30525625 = 6954^2 + 5525^2 .
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 78883741 - 23 = 78883733 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 78883691 and 78883700.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (78883771) 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, 35686 + ... + 37831.
It is an arithmetic number, because the mean of its divisors is an integer number (10476315).
Almost surely, 278883741 is an apocalyptic number.
It is an amenable number.
78883741 is a deficient number, since it is larger than the sum of its proper divisors (4926779).
78883741 is a wasteful number, since it uses less digits than its factorization.
78883741 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 73583.
The product of its digits is 301056, while the sum is 46.
The square root of 78883741 is about 8881.6519296806. The cubic root of 78883741 is about 428.8734546330.
The spelling of 78883741 in words is "seventy-eight million, eight hundred eighty-three thousand, seven hundred forty-one".
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