Base | Representation |
---|---|
bin | 1111010111101… |
… | …01100011010000 |
3 | 22222121102112001 |
4 | 13223311203100 |
5 | 231001311143 |
6 | 20443243344 |
7 | 3123622120 |
oct | 753654320 |
9 | 288542461 |
10 | 128932048 |
11 | 66862613 |
12 | 37219554 |
13 | 2093366b |
14 | 131a2c80 |
15 | b4bc14d |
hex | 7af58d0 |
128932048 has 20 divisors (see below), whose sum is σ = 285492640. Its totient is φ = 55256544.
The previous prime is 128932031. The next prime is 128932061. The reversal of 128932048 is 840239821.
It is a junction number, because it is equal to n+sod(n) for n = 128931998 and 128932016.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575478 + ... + 575701.
It is an arithmetic number, because the mean of its divisors is an integer number (14274632).
Almost surely, 2128932048 is an apocalyptic number.
It is an amenable number.
128932048 is an abundant number, since it is smaller than the sum of its proper divisors (156560592).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128932048 is a wasteful number, since it uses less digits than its factorization.
128932048 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1151194 (or 1151188 counting only the distinct ones).
The product of its (nonzero) digits is 27648, while the sum is 37.
The square root of 128932048 is about 11354.8248775576. The cubic root of 128932048 is about 505.1886992100.
It can be divided in two parts, 12893 and 2048, that added together give a palindrome (14941).
The spelling of 128932048 in words is "one hundred twenty-eight million, nine hundred thirty-two thousand, forty-eight".
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