Base | Representation |
---|---|
bin | 1111010100110… |
… | …11010001001101 |
3 | 22221220122020221 |
4 | 13222123101031 |
5 | 230402443003 |
6 | 20431311341 |
7 | 3120522031 |
oct | 752332115 |
9 | 287818227 |
10 | 128562253 |
11 | 6662a7a6 |
12 | 3707b551 |
13 | 20834251 |
14 | 131081c1 |
15 | b4477bd |
hex | 7a9b44d |
128562253 has 2 divisors, whose sum is σ = 128562254. Its totient is φ = 128562252.
The previous prime is 128562251. The next prime is 128562281. The reversal of 128562253 is 352265821.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 114447204 + 14115049 = 10698^2 + 3757^2 .
It is an emirp because it is prime and its reverse (352265821) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 128562253 - 21 = 128562251 is a prime.
Together with 128562251, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (128562251) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64281126 + 64281127.
It is an arithmetic number, because the mean of its divisors is an integer number (64281127).
Almost surely, 2128562253 is an apocalyptic number.
It is an amenable number.
128562253 is a deficient number, since it is larger than the sum of its proper divisors (1).
128562253 is an equidigital number, since it uses as much as digits as its factorization.
128562253 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 28800, while the sum is 34.
The square root of 128562253 is about 11338.5295783889. The cubic root of 128562253 is about 504.7052529605.
The spelling of 128562253 in words is "one hundred twenty-eight million, five hundred sixty-two thousand, two hundred fifty-three".
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