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10728085 = 52145617
BaseRepresentation
bin101000111011…
…001010010101
3202012001011111
4220323022111
510221244320
61021535021
7160121134
oct50731225
922161144
1010728085
116068195
123714471
1322b80a4
1415d391b
15e1da5a
hexa3b295

10728085 has 4 divisors (see below), whose sum is σ = 12873708. Its totient is φ = 8582464.

The previous prime is 10728083. The next prime is 10728127. The reversal of 10728085 is 58082701.

10728085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6671889 + 4056196 = 2583^2 + 2014^2 .

It is a cyclic number.

It is not a de Polignac number, because 10728085 - 21 = 10728083 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10728083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072804 + ... + 1072813.

It is an arithmetic number, because the mean of its divisors is an integer number (3218427).

Almost surely, 210728085 is an apocalyptic number.

It is an amenable number.

10728085 is a deficient number, since it is larger than the sum of its proper divisors (2145623).

10728085 is an equidigital number, since it uses as much as digits as its factorization.

10728085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145622.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 10728085 is about 3275.3755509865. The cubic root of 10728085 is about 220.5501725768.

The spelling of 10728085 in words is "ten million, seven hundred twenty-eight thousand, eighty-five".

Divisors: 1 5 2145617 10728085