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8146385 = 513125329
BaseRepresentation
bin11111000100110111010001
3120022212201222
4133010313101
54041141020
6450334425
7126146252
oct37046721
916285658
108146385
114664555
12288a415
1318c2c60
141120b29
15aadb25
hex7c4dd1

8146385 has 8 divisors (see below), whose sum is σ = 10527720. Its totient is φ = 6015744.

The previous prime is 8146363. The next prime is 8146387. The reversal of 8146385 is 5836418.

8146385 = 1832 + 1842 + ... + 3122.

It can be written as a sum of positive squares in 4 ways, for example, as 877969 + 7268416 = 937^2 + 2696^2 .

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 8146385 - 212 = 8142289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8146387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62600 + ... + 62729.

It is an arithmetic number, because the mean of its divisors is an integer number (1315965).

Almost surely, 28146385 is an apocalyptic number.

It is an amenable number.

8146385 is a deficient number, since it is larger than the sum of its proper divisors (2381335).

8146385 is a wasteful number, since it uses less digits than its factorization.

8146385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125347.

The product of its digits is 23040, while the sum is 35.

The square root of 8146385 is about 2854.1872748648. The cubic root of 8146385 is about 201.2125092515.

The spelling of 8146385 in words is "eight million, one hundred forty-six thousand, three hundred eighty-five".

Divisors: 1 5 13 65 125329 626645 1629277 8146385