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8008180205 = 52955228829
BaseRepresentation
bin1110111010101001…
…10010000111101101
3202200002210201000212
413131110302013231
5112400043231310
63402351032205
7402310260104
oct73524620755
922602721025
108008180205
11343a455353
121675b0b665
139a814858c
1455d7d703b
1531d0b4205
hex1dd5321ed

8008180205 has 8 divisors (see below), whose sum is σ = 9941189400. Its totient is φ = 6185628736.

The previous prime is 8008180171. The next prime is 8008180267. The reversal of 8008180205 is 5020818008.

It can be written as a sum of positive squares in 4 ways, for example, as 13853284 + 7994326921 = 3722^2 + 89411^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-8008180205 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27614270 + ... + 27614559.

It is an arithmetic number, because the mean of its divisors is an integer number (1242648675).

Almost surely, 28008180205 is an apocalyptic number.

It is an amenable number.

8008180205 is a deficient number, since it is larger than the sum of its proper divisors (1933009195).

8008180205 is a wasteful number, since it uses less digits than its factorization.

8008180205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55228863.

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

The square root of 8008180205 is about 89488.4361523879. The cubic root of 8008180205 is about 2000.6814515355.

The spelling of 8008180205 in words is "eight billion, eight million, one hundred eighty thousand, two hundred five".

Divisors: 1 5 29 145 55228829 276144145 1601636041 8008180205