Base | Representation |
---|---|
bin | 1000001100110… |
… | …00010010001011 |
3 | 11210102110001200 |
4 | 10012120102023 |
5 | 120101444240 |
6 | 10454115243 |
7 | 1463426160 |
oct | 406302213 |
9 | 153373050 |
10 | 68781195 |
11 | 3590936a |
12 | 1b04bb23 |
13 | 11332b42 |
14 | 91c6067 |
15 | 6089930 |
hex | 419848b |
68781195 has 48 divisors (see below), whose sum is σ = 138328320. Its totient is φ = 30964032.
The previous prime is 68781173. The next prime is 68781199. The reversal of 68781195 is 59118786.
It is not a de Polignac number, because 68781195 - 26 = 68781131 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a self number, because there is not a number n which added to its sum of digits gives 68781195.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68781199) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19476 + ... + 22734.
It is an arithmetic number, because the mean of its divisors is an integer number (2881840).
Almost surely, 268781195 is an apocalyptic number.
68781195 is an abundant number, since it is smaller than the sum of its proper divisors (69547125).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68781195 is a wasteful number, since it uses less digits than its factorization.
68781195 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3344 (or 3341 counting only the distinct ones).
The product of its digits is 120960, while the sum is 45.
The square root of 68781195 is about 8293.4428918273. The cubic root of 68781195 is about 409.7225864816.
The spelling of 68781195 in words is "sixty-eight million, seven hundred eighty-one thousand, one hundred ninety-five".
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