Base | Representation |
---|---|
bin | 1111100101101… |
… | …00000010101110 |
3 | 100010001100012111 |
4 | 13302310002232 |
5 | 231433322003 |
6 | 20550354234 |
7 | 3145310023 |
oct | 762640256 |
9 | 303040174 |
10 | 130760878 |
11 | 678a1646 |
12 | 3795b97a |
13 | 21123c01 |
14 | 1351b54a |
15 | b72de6d |
hex | 7cb40ae |
130760878 has 4 divisors (see below), whose sum is σ = 196141320. Its totient is φ = 65380438.
The previous prime is 130760873. The next prime is 130760899. The reversal of 130760878 is 878067031.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 878067031 = 139 ⋅6317029.
It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a self number, because there is not a number n which added to its sum of digits gives 130760878.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130760873) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32690218 + ... + 32690221.
It is an arithmetic number, because the mean of its divisors is an integer number (49035330).
Almost surely, 2130760878 is an apocalyptic number.
130760878 is a deficient number, since it is larger than the sum of its proper divisors (65380442).
130760878 is an equidigital number, since it uses as much as digits as its factorization.
130760878 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 65380441.
The product of its (nonzero) digits is 56448, while the sum is 40.
The square root of 130760878 is about 11435.0722778651. The cubic root of 130760878 is about 507.5661013821.
The spelling of 130760878 in words is "one hundred thirty million, seven hundred sixty thousand, eight hundred seventy-eight".
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