| Base | Representation |
|---|---|
| bin | 1111010100000… |
| … | …01001001000100 |
| 3 | 22221201012110100 |
| 4 | 13222001021010 |
| 5 | 230341031421 |
| 6 | 20425124100 |
| 7 | 3116565030 |
| oct | 752011104 |
| 9 | 287635410 |
| 10 | 128455236 |
| 11 | 66567358 |
| 12 | 37029630 |
| 13 | 207c7620 |
| 14 | 130bb1c0 |
| 15 | b425c26 |
| hex | 7a81244 |
128455236 has 144 divisors (see below), whose sum is σ = 404337024. Its totient is φ = 33481728.
The previous prime is 128455211. The next prime is 128455237. The reversal of 128455236 is 632554821.
128455236 is a `hidden beast` number, since 128 + 4 + 5 + 523 + 6 = 666.
128455236 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (36).
128455236 is strictly pandigital in base 9.
It is a self number, because there is not a number n which added to its sum of digits gives 128455236.
It is not an unprimeable number, because it can be changed into a prime (128455237) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 370015 + ... + 370361.
It is an arithmetic number, because the mean of its divisors is an integer number (2807896).
Almost surely, 2128455236 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 128455236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202168512).
128455236 is an abundant number, since it is smaller than the sum of its proper divisors (275881788).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128455236 is a wasteful number, since it uses less digits than its factorization.
128455236 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 490 (or 485 counting only the distinct ones).
The product of its digits is 57600, while the sum is 36.
The square root of 128455236 is about 11333.8094213729. The cubic root of 128455236 is about 504.5651728708.
It can be divided in two parts, 12845 and 5236, that added together give a palindrome (18081).
The spelling of 128455236 in words is "one hundred twenty-eight million, four hundred fifty-five thousand, two hundred thirty-six".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.073 sec. • engine limits •