Base | Representation |
---|---|
bin | 1111010110110… |
… | …11101101100000 |
3 | 22222102001100001 |
4 | 13223123231200 |
5 | 230434414313 |
6 | 20441105344 |
7 | 3123001420 |
oct | 753335540 |
9 | 288361301 |
10 | 128826208 |
11 | 667a0045 |
12 | 37188254 |
13 | 208c7434 |
14 | 13176480 |
15 | b49aadd |
hex | 7adbb60 |
128826208 has 48 divisors (see below), whose sum is σ = 291271680. Its totient is φ = 54942336.
The previous prime is 128826167. The next prime is 128826227. The reversal of 128826208 is 802628821.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48663 + ... + 51241.
It is an arithmetic number, because the mean of its divisors is an integer number (6068160).
Almost surely, 2128826208 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 128826208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145635840).
128826208 is an abundant number, since it is smaller than the sum of its proper divisors (162445472).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128826208 is a wasteful number, since it uses less digits than its factorization.
128826208 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2819 (or 2811 counting only the distinct ones).
The product of its (nonzero) digits is 24576, while the sum is 37.
The square root of 128826208 is about 11350.1633468422. The cubic root of 128826208 is about 505.0504253147.
The spelling of 128826208 in words is "one hundred twenty-eight million, eight hundred twenty-six thousand, two hundred eight".
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