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180628 = 2276451
BaseRepresentation
bin101100000110010100
3100011202221
4230012110
521240003
63512124
71351420
oct540624
9304687
10180628
11113788
1288644
13642a6
1449b80
15387bd
hex2c194

180628 has 12 divisors (see below), whose sum is σ = 361312. Its totient is φ = 77400.

The previous prime is 180623. The next prime is 180629. The reversal of 180628 is 826081.

180628 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

180628 is an admirable number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 11.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3198 + ... + 3253.

2180628 is an apocalyptic number.

It is an amenable number.

180628 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.

180628 is a wasteful number, since it uses less digits than its factorization.

180628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6462 (or 6460 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 180628 is about 425.0035293971. The cubic root of 180628 is about 56.5277489193.

It can be divided in two parts, 180 and 628, that added together give a palindrome (808).

The spelling of 180628 in words is "one hundred eighty thousand, six hundred twenty-eight".

Divisors: 1 2 4 7 14 28 6451 12902 25804 45157 90314 180628