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280009082 = 21063131707
BaseRepresentation
bin10000101100001…
…001100101111010
3201111212221020202
4100230021211322
51033140242312
643441322202
76640016003
oct2054114572
9644787222
10280009082
1113406aa71
1279936362
134601b862
142928c1aa
15198b09c2
hex10b0997a

280009082 has 8 divisors (see below), whose sum is σ = 420411936. Its totient is φ = 139871772.

The previous prime is 280009073. The next prime is 280009087. The reversal of 280009082 is 280900082.

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

It is not an unprimeable number, because it can be changed into a prime (280009087) 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, 63728 + ... + 67979.

It is an arithmetic number, because the mean of its divisors is an integer number (52551492).

Almost surely, 2280009082 is an apocalyptic number.

280009082 is a deficient number, since it is larger than the sum of its proper divisors (140402854).

280009082 is a wasteful number, since it uses less digits than its factorization.

280009082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132772.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 280009082 is about 16733.4719051367. The cubic root of 280009082 is about 654.2203352527.

The spelling of 280009082 in words is "two hundred eighty million, nine thousand, eighty-two".

Divisors: 1 2 1063 2126 131707 263414 140004541 280009082