128946 has 8 divisors (see below), whose sum is σ = 257904. Its totient is φ = 42980.
The previous prime is 128941. The next prime is 128951. The reversal of 128946 is 649821.
128946 = T66 + T67 + ... + T101.
It is an interprime number because it is at equal distance from previous prime (128941) and next prime (128951).
It is a sphenic number, since it is the product of 3 distinct primes.
128946 is an admirable number.
It is a Curzon number.
It is a plaindrome in base 13.
It is not an unprimeable number, because it can be changed into a prime (128941) by changing a digit.
128946 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10740 + ... + 10751.
It is an arithmetic number, because the mean of its divisors is an integer number (32238).
2128946 is an apocalyptic number.
128946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128946 is a wasteful number, since it uses less digits than its factorization.
128946 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 21496.
The product of its digits is 3456, while the sum is 30.
The square root of 128946 is about 359.0905178364. The cubic root of 128946 is about 50.5206921053.
The spelling of 128946 in words is "one hundred twenty-eight thousand, nine hundred forty-six".
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