Base | Representation |
---|---|
bin | 1111010100111… |
… | …11101001011110 |
3 | 22221221112212021 |
4 | 13222133221132 |
5 | 230404031230 |
6 | 20431530354 |
7 | 3120625234 |
oct | 752375136 |
9 | 287845767 |
10 | 128580190 |
11 | 66642222 |
12 | 370899ba |
13 | 2083c46b |
14 | 13110954 |
15 | b44cc7a |
hex | 7a9fa5e |
128580190 has 16 divisors (see below), whose sum is σ = 231845328. Its totient is φ = 51342976.
The previous prime is 128580161. The next prime is 128580209. The reversal of 128580190 is 91085821.
It is a super-2 number, since 2×1285801902 = 33065730520872200, which contains 22 as substring.
It is a nialpdrome in base 11.
It is a congruent number.
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, 4912 + ... + 16771.
It is an arithmetic number, because the mean of its divisors is an integer number (14490333).
Almost surely, 2128580190 is an apocalyptic number.
128580190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
128580190 is a deficient number, since it is larger than the sum of its proper divisors (103265138).
128580190 is a wasteful number, since it uses less digits than its factorization.
128580190 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 22283.
The product of its (nonzero) digits is 5760, while the sum is 34.
The square root of 128580190 is about 11339.3205263808. The cubic root of 128580190 is about 504.7287240207.
The spelling of 128580190 in words is "one hundred twenty-eight million, five hundred eighty thousand, one hundred ninety".
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