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208960066 = 2715319749
BaseRepresentation
bin11000111010001…
…11101001000010
3112120012021022201
430131013221002
5411443210231
632422423414
75115063010
oct1435075102
9476167281
10208960066
11a7a52877
1259b91b6a
13343a3713
141da758b0
1513529161
hexc747a42

208960066 has 16 divisors (see below), whose sum is σ = 358488000. Its totient is φ = 89486640.

The previous prime is 208960061. The next prime is 208960093. The reversal of 208960066 is 660069802.

It is not an unprimeable number, because it can be changed into a prime (208960061) 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 7 ways as a sum of consecutive naturals, for example, 16560 + ... + 26308.

It is an arithmetic number, because the mean of its divisors is an integer number (22405500).

Almost surely, 2208960066 is an apocalyptic number.

208960066 is a deficient number, since it is larger than the sum of its proper divisors (149527934).

208960066 is a wasteful number, since it uses less digits than its factorization.

208960066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11289.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 208960066 is about 14455.4510825501. The cubic root of 208960066 is about 593.4094146292.

The spelling of 208960066 in words is "two hundred eight million, nine hundred sixty thousand, sixty-six".

Divisors: 1 2 7 14 1531 3062 9749 10717 19498 21434 68243 136486 14925719 29851438 104480033 208960066