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8020529 = 11729139
BaseRepresentation
bin11110100110001000110001
3120002111002122
4132212020301
54023124104
6443524025
7125113316
oct36461061
916074078
108020529
114588a40
122829615
13187a89a
1410cad0d
15a866be
hex7a6231

8020529 has 4 divisors (see below), whose sum is σ = 8749680. Its totient is φ = 7291380.

The previous prime is 8020517. The next prime is 8020553. The reversal of 8020529 is 9250208.

8020529 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8020529 - 28 = 8020273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8020498 and 8020507.

It is not an unprimeable number, because it can be changed into a prime (8020589) 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, 364559 + ... + 364580.

It is an arithmetic number, because the mean of its divisors is an integer number (2187420).

Almost surely, 28020529 is an apocalyptic number.

It is an amenable number.

8020529 is a deficient number, since it is larger than the sum of its proper divisors (729151).

8020529 is a wasteful number, since it uses less digits than its factorization.

8020529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729150.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 8020529 is about 2832.0538483581. The cubic root of 8020529 is about 200.1709288750.

The spelling of 8020529 in words is "eight million, twenty thousand, five hundred twenty-nine".

Divisors: 1 11 729139 8020529