| Base | Representation |
|---|---|
| bin | 111011101001101111… |
| … | …0111011010001001000 |
| 3 | 110020122122210112120000 |
| 4 | 1313103132323101020 |
| 5 | 4044323122314430 |
| 6 | 134503241403000 |
| 7 | 12153330214410 |
| oct | 1672336732110 |
| 9 | 406578715500 |
| 10 | 128102151240 |
| 11 | 4a367363288 |
| 12 | 209b1199460 |
| 13 | c1069451bb |
| 14 | 62b3401640 |
| 15 | 34eb42ce60 |
| hex | 1dd37bb448 |
128102151240 has 320 divisors, whose sum is σ = 509045644800. Its totient is φ = 28270674432.
The previous prime is 128102151239. The next prime is 128102151241. The reversal of 128102151240 is 42151201821.
128102151240 is a `hidden beast` number, since 1 + 2 + 8 + 102 + 1 + 512 + 40 = 666.
128102151240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is an interprime number because it is at equal distance from previous prime (128102151239) and next prime (128102151241).
It is a super-2 number, since 2×1281021512402 (a number of 23 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is not an unprimeable number, because it can be changed into a prime (128102151241) by changing a digit.
It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 560337 + ... + 755103.
It is an arithmetic number, because the mean of its divisors is an integer number (1590767640).
Almost surely, 2128102151240 is an apocalyptic number.
128102151240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 128102151240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254522822400).
128102151240 is an abundant number, since it is smaller than the sum of its proper divisors (380943493560).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128102151240 is a wasteful number, since it uses less digits than its factorization.
128102151240 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 194826 (or 194813 counting only the distinct ones).
The product of its (nonzero) digits is 1280, while the sum is 27.
The spelling of 128102151240 in words is "one hundred twenty-eight billion, one hundred two million, one hundred fifty-one thousand, two hundred forty".
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