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280672107 = 3227412147
BaseRepresentation
bin10000101110101…
…011011101101011
3201120010121202020
4100232223131223
51033323001412
643503435523
76645450012
oct2056533553
9646117666
10280672107
11134483121
1279bb5ba3
13461c1591
14293c1a79
151999218c
hex10bab76b

280672107 has 8 divisors (see below), whose sum is σ = 375878976. Its totient is φ = 186289992.

The previous prime is 280672103. The next prime is 280672111. The reversal of 280672107 is 701276082.

It is an interprime number because it is at equal distance from previous prime (280672103) and next prime (280672111).

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

It is not a de Polignac number, because 280672107 - 22 = 280672103 is a prime.

It is a super-3 number, since 3×2806721073 (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (280672103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205393 + ... + 206754.

It is an arithmetic number, because the mean of its divisors is an integer number (46984872).

Almost surely, 2280672107 is an apocalyptic number.

280672107 is a deficient number, since it is larger than the sum of its proper divisors (95206869).

280672107 is a wasteful number, since it uses less digits than its factorization.

280672107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412377.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 280672107 is about 16753.2715312562. The cubic root of 280672107 is about 654.7362977095.

The spelling of 280672107 in words is "two hundred eighty million, six hundred seventy-two thousand, one hundred seven".

Divisors: 1 3 227 681 412147 1236441 93557369 280672107