Base | Representation |
---|---|
bin | 1111010011110… |
… | …11001001110110 |
3 | 22221122221210222 |
4 | 13221323021312 |
5 | 230334240320 |
6 | 20424414342 |
7 | 3116433362 |
oct | 751731166 |
9 | 287587728 |
10 | 128430710 |
11 | 6654a991 |
12 | 370173b2 |
13 | 207b9405 |
14 | 130b22a2 |
15 | b41d825 |
hex | 7a7b276 |
128430710 has 32 divisors (see below), whose sum is σ = 234459360. Its totient is φ = 50648832.
The previous prime is 128430683. The next prime is 128430719. The reversal of 128430710 is 17034821.
It is a super-2 number, since 2×1284307102 = 32988894542208200, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 128430710.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (128430719) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280802 + ... + 281258.
It is an arithmetic number, because the mean of its divisors is an integer number (7326855).
Almost surely, 2128430710 is an apocalyptic number.
128430710 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
128430710 is a deficient number, since it is larger than the sum of its proper divisors (106028650).
128430710 is a wasteful number, since it uses less digits than its factorization.
128430710 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 800.
The product of its (nonzero) digits is 1344, while the sum is 26.
The square root of 128430710 is about 11332.7273857620. The cubic root of 128430710 is about 504.5330585627.
It can be divided in two parts, 1284 and 30710, that multiplied together give a triangular number (39431640 = T8880).
The spelling of 128430710 in words is "one hundred twenty-eight million, four hundred thirty thousand, seven hundred ten".
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