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328728 = 23313697
BaseRepresentation
bin1010000010000011000
3121200221010
41100100120
541004403
611013520
72536251
oct1202030
9550833
10328728
11204a84
1213a2a0
13b681a
1487b28
1567603
hex50418

328728 has 16 divisors (see below), whose sum is σ = 821880. Its totient is φ = 109568.

The previous prime is 328721. The next prime is 328753. The reversal of 328728 is 827823.

328728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 32 + 210 + 7 + 8 + 216 + 86 .

It is a junction number, because it is equal to n+sod(n) for n = 328695 and 328704.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 328728.

It is not an unprimeable number, because it can be changed into a prime (328721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6825 + ... + 6872.

2328728 is an apocalyptic number.

It is an amenable number.

328728 is an abundant number, since it is smaller than the sum of its proper divisors (493152).

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

328728 is a wasteful number, since it uses less digits than its factorization.

328728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13706 (or 13702 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 328728 is about 573.3480618263. The cubic root of 328728 is about 69.0153295073.

The spelling of 328728 in words is "three hundred twenty-eight thousand, seven hundred twenty-eight".

Divisors: 1 2 3 4 6 8 12 24 13697 27394 41091 54788 82182 109576 164364 328728