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206807960 = 23538913291
BaseRepresentation
bin11000101001110…
…10001110011000
3112102010221012002
430110322032120
5410420323320
632304340132
75060560442
oct1424721630
9472127162
10206807960
11a6812977
1259314648
1333acbc98
141d675492
1513251675
hexc53a398

206807960 has 32 divisors (see below), whose sum is σ = 466549200. Its totient is φ = 82504320.

The previous prime is 206807933. The next prime is 206807969. The reversal of 206807960 is 69708602.

206807960 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206807969) 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, 8915 + ... + 22205.

Almost surely, 2206807960 is an apocalyptic number.

206807960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206807960 is an abundant number, since it is smaller than the sum of its proper divisors (259741240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206807960 is a wasteful number, since it uses less digits than its factorization.

206807960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13691 (or 13687 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 206807960 is about 14380.8191699917. The cubic root of 206807960 is about 591.3651811472.

The spelling of 206807960 in words is "two hundred six million, eight hundred seven thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 389 778 1556 1945 3112 3890 7780 13291 15560 26582 53164 66455 106328 132910 265820 531640 5170199 10340398 20680796 25850995 41361592 51701990 103403980 206807960