Base | Representation |
---|---|
bin | 1000001000100… |
… | …10010011000001 |
3 | 11202101120020101 |
4 | 10010102103001 |
5 | 114431414020 |
6 | 10434242401 |
7 | 1455652144 |
oct | 404222301 |
9 | 152346211 |
10 | 68232385 |
11 | 35574001 |
12 | 1aa26401 |
13 | 111a00c0 |
14 | 90c205b |
15 | 5ecc00a |
hex | 41124c1 |
68232385 has 16 divisors (see below), whose sum is σ = 88408656. Its totient is φ = 50254848.
The previous prime is 68232377. The next prime is 68232397. The reversal of 68232385 is 58323286.
It can be written as a sum of positive squares in 8 ways, for example, as 400689 + 67831696 = 633^2 + 8236^2 .
It is a cyclic number.
It is not a de Polignac number, because 68232385 - 23 = 68232377 is a prime.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28557 + ... + 30853.
It is an arithmetic number, because the mean of its divisors is an integer number (5525541).
Almost surely, 268232385 is an apocalyptic number.
68232385 is a gapful number since it is divisible by the number (65) formed by its first and last digit.
It is an amenable number.
68232385 is a deficient number, since it is larger than the sum of its proper divisors (20176271).
68232385 is a wasteful number, since it uses less digits than its factorization.
68232385 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2772.
The product of its digits is 69120, while the sum is 37.
The square root of 68232385 is about 8260.2896438321. The cubic root of 68232385 is about 408.6299400808.
Subtracting from 68232385 its reverse (58323286), we obtain a palindrome (9909099).
The spelling of 68232385 in words is "sixty-eight million, two hundred thirty-two thousand, three hundred eighty-five".
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