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808004213 = 4717191579
BaseRepresentation
bin110000001010010…
…010101001110101
32002022101212101222
4300022102221311
53123322113323
6212102200125
726010631262
oct6012225165
92068355358
10808004213
11385108585
121a6723045
13cb526203
1479450269
154ae089c8
hex30292a75

808004213 has 4 divisors (see below), whose sum is σ = 825195840. Its totient is φ = 790812588.

The previous prime is 808004207. The next prime is 808004227. The reversal of 808004213 is 312400808.

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 a de Polignac number, because none of the positive numbers 2k-808004213 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 (808004273) 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, 8595743 + ... + 8595836.

It is an arithmetic number, because the mean of its divisors is an integer number (206298960).

Almost surely, 2808004213 is an apocalyptic number.

It is an amenable number.

808004213 is a deficient number, since it is larger than the sum of its proper divisors (17191627).

808004213 is a wasteful number, since it uses less digits than its factorization.

808004213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17191626.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 808004213 is about 28425.4149134186. The cubic root of 808004213 is about 931.4035203683.

The spelling of 808004213 in words is "eight hundred eight million, four thousand, two hundred thirteen".

Divisors: 1 47 17191579 808004213