Base | Representation |
---|---|
bin | 1111010000110… |
… | …11010101000110 |
3 | 22220221000102002 |
4 | 13220123111012 |
5 | 230234210324 |
6 | 20412145302 |
7 | 3113210153 |
oct | 750332506 |
9 | 286830362 |
10 | 128038214 |
11 | 66302007 |
12 | 36a68232 |
13 | 206ac875 |
14 | 1300d22a |
15 | b3923ae |
hex | 7a1b546 |
128038214 has 4 divisors (see below), whose sum is σ = 192057324. Its totient is φ = 64019106.
The previous prime is 128038213. The next prime is 128038243. The reversal of 128038214 is 412830821.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 412830821 = 13 ⋅31756217.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (128038213) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32009552 + ... + 32009555.
It is an arithmetic number, because the mean of its divisors is an integer number (48014331).
Almost surely, 2128038214 is an apocalyptic number.
128038214 is a deficient number, since it is larger than the sum of its proper divisors (64019110).
128038214 is an equidigital number, since it uses as much as digits as its factorization.
128038214 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 64019109.
The product of its (nonzero) digits is 3072, while the sum is 29.
The square root of 128038214 is about 11315.3972091129. The cubic root of 128038214 is about 504.0185677001.
The spelling of 128038214 in words is "one hundred twenty-eight million, thirty-eight thousand, two hundred fourteen".
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