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10028885 = 52005777
BaseRepresentation
bin100110010000…
…011101010101
3200212112001012
4212100131111
510031411020
6554542005
7151146506
oct46203525
920775035
1010028885
11572a939
123437905
132101a69
141490bad
15d317c5
hex990755

10028885 has 4 divisors (see below), whose sum is σ = 12034668. Its totient is φ = 8023104.

The previous prime is 10028881. The next prime is 10028891. The reversal of 10028885 is 58882001.

10028885 is digitally balanced in base 3, 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, and also an emirpimes, since its reverse is a distinct semiprime: 58882001 = 232560087.

It can be written as a sum of positive squares in 2 ways, for example, as 3833764 + 6195121 = 1958^2 + 2489^2 .

It is a cyclic number.

It is not a de Polignac number, because 10028885 - 22 = 10028881 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10028881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1002884 + ... + 1002893.

It is an arithmetic number, because the mean of its divisors is an integer number (3008667).

Almost surely, 210028885 is an apocalyptic number.

It is an amenable number.

10028885 is a deficient number, since it is larger than the sum of its proper divisors (2005783).

10028885 is an equidigital number, since it uses as much as digits as its factorization.

10028885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005782.

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 10028885 is about 3166.8414864025. The cubic root of 10028885 is about 215.6507057500.

The spelling of 10028885 in words is "ten million, twenty-eight thousand, eight hundred eighty-five".

Divisors: 1 5 2005777 10028885