Base | Representation |
---|---|
bin | 1111010010011… |
… | …01110110111110 |
3 | 22221022112022120 |
4 | 13221031312332 |
5 | 230312321212 |
6 | 20420423410 |
7 | 3115031442 |
oct | 751156676 |
9 | 287275276 |
10 | 128245182 |
11 | 6643355a |
12 | 36b47b66 |
13 | 20752b30 |
14 | 13064822 |
15 | b3d388c |
hex | 7a4ddbe |
128245182 has 48 divisors (see below), whose sum is σ = 284123952. Its totient is φ = 38361600.
The previous prime is 128245151. The next prime is 128245189. The reversal of 128245182 is 281542821.
It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (128245189) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106182 + ... + 107382.
It is an arithmetic number, because the mean of its divisors is an integer number (5919249).
Almost surely, 2128245182 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 128245182, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142061976).
128245182 is an abundant number, since it is smaller than the sum of its proper divisors (155878770).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128245182 is a wasteful number, since it uses less digits than its factorization.
128245182 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1293 (or 1256 counting only the distinct ones).
The product of its digits is 10240, while the sum is 33.
The square root of 128245182 is about 11324.5389310117. The cubic root of 128245182 is about 504.2899959320.
It can be divided in two parts, 1282 and 45182, that added together give a palindrome (46464).
The spelling of 128245182 in words is "one hundred twenty-eight million, two hundred forty-five thousand, one hundred eighty-two".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.066 sec. • engine limits •