Base | Representation |
---|---|
bin | 1111010111100… |
… | …00010110010101 |
3 | 22222120100021220 |
4 | 13223300112111 |
5 | 231000120431 |
6 | 20443000553 |
7 | 3123503031 |
oct | 753602625 |
9 | 288510256 |
10 | 128910741 |
11 | 66848603 |
12 | 37209159 |
13 | 20926a5b |
14 | 131991c1 |
15 | b4b5b96 |
hex | 7af0595 |
128910741 has 16 divisors (see below), whose sum is σ = 178229760. Its totient is φ = 82791360.
The previous prime is 128910737. The next prime is 128910757. The reversal of 128910741 is 147019821.
It is not a de Polignac number, because 128910741 - 22 = 128910737 is a prime.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (128910731) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18271 + ... + 24323.
It is an arithmetic number, because the mean of its divisors is an integer number (11139360).
Almost surely, 2128910741 is an apocalyptic number.
It is an amenable number.
128910741 is a deficient number, since it is larger than the sum of its proper divisors (49319019).
128910741 is a wasteful number, since it uses less digits than its factorization.
128910741 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6316.
The product of its (nonzero) digits is 4032, while the sum is 33.
The square root of 128910741 is about 11353.8866032738. The cubic root of 128910741 is about 505.1608689206.
The spelling of 128910741 in words is "one hundred twenty-eight million, nine hundred ten thousand, seven hundred forty-one".
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