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8200285 = 51640057
BaseRepresentation
bin11111010010000001011101
3120102121200021
4133102001131
54044402120
6451432141
7126462352
oct37220135
916377607
108200285
1146a0aa5
1228b5651
131911652
141136629
15abeaaa
hex7d205d

8200285 has 4 divisors (see below), whose sum is σ = 9840348. Its totient is φ = 6560224.

The previous prime is 8200271. The next prime is 8200289. The reversal of 8200285 is 5820028.

8200285 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.

It can be written as a sum of positive squares in 2 ways, for example, as 5968249 + 2232036 = 2443^2 + 1494^2 .

It is a cyclic number.

It is not a de Polignac number, because 8200285 - 215 = 8167517 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 (8200289) 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, 820024 + ... + 820033.

It is an arithmetic number, because the mean of its divisors is an integer number (2460087).

Almost surely, 28200285 is an apocalyptic number.

It is an amenable number.

8200285 is a deficient number, since it is larger than the sum of its proper divisors (1640063).

8200285 is a wasteful number, since it uses less digits than its factorization.

8200285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640062.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 8200285 is about 2863.6139753815. The cubic root of 8200285 is about 201.6553037181.

The spelling of 8200285 in words is "eight million, two hundred thousand, two hundred eighty-five".

Divisors: 1 5 1640057 8200285