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128046 = 2321341
BaseRepresentation
bin11111010000101110
320111122110
4133100232
513044141
62424450
71042212
oct372056
9214573
10128046
1188226
1262126
1346389
1434942
1527e16
hex1f42e

128046 has 8 divisors (see below), whose sum is σ = 256104. Its totient is φ = 42680.

The previous prime is 128033. The next prime is 128047. The reversal of 128046 is 640821.

128046 is nontrivially palindromic in base 12.

It is a sphenic number, since it is the product of 3 distinct primes.

128046 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128047) by changing a digit.

128046 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, 10665 + ... + 10676.

It is an arithmetic number, because the mean of its divisors is an integer number (32013).

2128046 is an apocalyptic number.

128046 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.

128046 is a wasteful number, since it uses less digits than its factorization.

128046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21346.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 128046 is about 357.8351575796. The cubic root of 128046 is about 50.4028783944.

Adding to 128046 its reverse (640821), we get a palindrome (768867).

It can be divided in two parts, 1280 and 46, that added together give a triangular number (1326 = T51).

The spelling of 128046 in words is "one hundred twenty-eight thousand, forty-six".

Divisors: 1 2 3 6 21341 42682 64023 128046