Base | Representation |
---|---|
bin | 1111010101000… |
… | …10110111100100 |
3 | 22221222012221210 |
4 | 13222202313210 |
5 | 230404442010 |
6 | 20432111420 |
7 | 3121011546 |
oct | 752426744 |
9 | 287865853 |
10 | 128593380 |
11 | 66651123 |
12 | 37095570 |
13 | 20845476 |
14 | 13115696 |
15 | b451b20 |
hex | 7aa2de4 |
128593380 has 24 divisors (see below), whose sum is σ = 360061632. Its totient is φ = 34291552.
The previous prime is 128593379. The next prime is 128593411. The reversal of 128593380 is 83395821.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071552 + ... + 1071671.
It is an arithmetic number, because the mean of its divisors is an integer number (15002568).
Almost surely, 2128593380 is an apocalyptic number.
128593380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
128593380 is an abundant number, since it is smaller than the sum of its proper divisors (231468252).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128593380 is a wasteful number, since it uses less digits than its factorization.
128593380 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2143235 (or 2143233 counting only the distinct ones).
The product of its (nonzero) digits is 51840, while the sum is 39.
The square root of 128593380 is about 11339.9021159797. The cubic root of 128593380 is about 504.7459821075.
The spelling of 128593380 in words is "one hundred twenty-eight million, five hundred ninety-three thousand, three hundred eighty".
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