Search a number
-
+
8200819 = 11745529
BaseRepresentation
bin11111010010001001110011
3120102122102001
4133102021303
54044411234
6451434431
7126464044
oct37221163
916378361
108200819
1146a1440
1228b5a17
131911973
1411368cb
15abed14
hex7d2273

8200819 has 4 divisors (see below), whose sum is σ = 8946360. Its totient is φ = 7455280.

The previous prime is 8200789. The next prime is 8200847. The reversal of 8200819 is 9180028.

8200819 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 is a cyclic number.

It is not a de Polignac number, because 8200819 - 27 = 8200691 is a prime.

It is a super-2 number, since 2×82008192 = 134506864541522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8200879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372754 + ... + 372775.

It is an arithmetic number, because the mean of its divisors is an integer number (2236590).

Almost surely, 28200819 is an apocalyptic number.

8200819 is a deficient number, since it is larger than the sum of its proper divisors (745541).

8200819 is a wasteful number, since it uses less digits than its factorization.

8200819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745540.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 8200819 is about 2863.7072126878. The cubic root of 8200819 is about 201.6596808666.

The spelling of 8200819 in words is "eight million, two hundred thousand, eight hundred nineteen".

Divisors: 1 11 745529 8200819