Base | Representation |
---|---|
bin | 101110110110… |
… | …000100000100 |
3 | 212002220002100 |
4 | 232312010010 |
5 | 11120430233 |
6 | 1115112100 |
7 | 206243643 |
oct | 56660404 |
9 | 25086070 |
10 | 12280068 |
11 | 6a28219 |
12 | 4142630 |
13 | 270c618 |
14 | 18b935a |
15 | 1128813 |
hex | bb6104 |
12280068 has 36 divisors (see below), whose sum is σ = 32393088. Its totient is φ = 3915120.
The previous prime is 12280067. The next prime is 12280087. The reversal of 12280068 is 86008221.
It is a tau number, because it is divible by the number of its divisors (36).
It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.
It is not an unprimeable number, because it can be changed into a prime (12280063) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6588 + ... + 8243.
It is an arithmetic number, because the mean of its divisors is an integer number (899808).
Almost surely, 212280068 is an apocalyptic number.
12280068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
12280068 is an abundant number, since it is smaller than the sum of its proper divisors (20113020).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12280068 is a wasteful number, since it uses less digits than its factorization.
12280068 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 14864 (or 14859 counting only the distinct ones).
The product of its (nonzero) digits is 1536, while the sum is 27.
The square root of 12280068 is about 3504.2927959861. The cubic root of 12280068 is about 230.7102681155.
Adding to 12280068 its reverse (86008221), we get a palindrome (98288289).
The spelling of 12280068 in words is "twelve million, two hundred eighty thousand, sixty-eight".
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