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128034 = 2332371
BaseRepresentation
bin11111010000100010
320111122000
4133100202
513044114
62424430
71042164
oct372042
9214560
10128034
1188215
1262116
134637a
1434934
1527e09
hex1f422

128034 has 16 divisors (see below), whose sum is σ = 284640. Its totient is φ = 42660.

The previous prime is 128033. The next prime is 128047. The reversal of 128034 is 430821.

It is a happy number.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 127998 and 128016.

It is not an unprimeable number, because it can be changed into a prime (128033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1132 + ... + 1239.

It is an arithmetic number, because the mean of its divisors is an integer number (17790).

2128034 is an apocalyptic number.

128034 is an abundant number, since it is smaller than the sum of its proper divisors (156606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128034 is a wasteful number, since it uses less digits than its factorization.

128034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382 (or 2376 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 128034 is about 357.8183896895. The cubic root of 128034 is about 50.4013038211.

Adding to 128034 its reverse (430821), we get a palindrome (558855).

The spelling of 128034 in words is "one hundred twenty-eight thousand, thirty-four".

Divisors: 1 2 3 6 9 18 27 54 2371 4742 7113 14226 21339 42678 64017 128034