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8680947 = 3112947193
BaseRepresentation
bin100001000111…
…010111110011
3121100001000120
4201013113303
54210242242
6510021323
7133533612
oct41072763
917301016
108680947
11499a140
122aa7843
131a4c372
14121d879
15b671ec
hex8475f3

8680947 has 32 divisors (see below), whose sum is σ = 13409280. Its totient is φ = 4945920.

The previous prime is 8680939. The next prime is 8680951. The reversal of 8680947 is 7490868.

It is a happy number.

It is not a de Polignac number, because 8680947 - 23 = 8680939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8680899 and 8680908.

It is not an unprimeable number, because it can be changed into a prime (8680907) 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 31 ways as a sum of consecutive naturals, for example, 44883 + ... + 45075.

It is an arithmetic number, because the mean of its divisors is an integer number (419040).

Almost surely, 28680947 is an apocalyptic number.

8680947 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

8680947 is a deficient number, since it is larger than the sum of its proper divisors (4728333).

8680947 is a wasteful number, since it uses less digits than its factorization.

8680947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 8680947 is about 2946.3446845201. The cubic root of 8680947 is about 205.5207620465.

The spelling of 8680947 in words is "eight million, six hundred eighty thousand, nine hundred forty-seven".

Divisors: 1 3 11 29 33 47 87 141 193 319 517 579 957 1363 1551 2123 4089 5597 6369 9071 14993 16791 27213 44979 61567 99781 184701 263059 299343 789177 2893649 8680947