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8681056986 = 237206691833
BaseRepresentation
bin10000001010110111…
…00110101011011010
3211101222221101110010
420011123212223122
5120234322310421
63553225102350
7425060524020
oct100533465332
924358841403
108681056986
113755259668
1218233279b6
13a8467c214
145c4d10710
1535c1ca076
hex2056e6ada

8681056986 has 16 divisors (see below), whose sum is σ = 19842416064. Its totient is φ = 2480301984.

The previous prime is 8681056961. The next prime is 8681056991. The reversal of 8681056986 is 6896501868.

8681056986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

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, 103345875 + ... + 103345958.

It is an arithmetic number, because the mean of its divisors is an integer number (1240151004).

Almost surely, 28681056986 is an apocalyptic number.

8681056986 is an abundant number, since it is smaller than the sum of its proper divisors (11161359078).

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

8681056986 is a wasteful number, since it uses less digits than its factorization.

8681056986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206691845.

The product of its (nonzero) digits is 4976640, while the sum is 57.

The square root of 8681056986 is about 93172.1899817751. The cubic root of 8681056986 is about 2055.2163001289.

The spelling of 8681056986 in words is "eight billion, six hundred eighty-one million, fifty-six thousand, nine hundred eighty-six".

Divisors: 1 2 3 6 7 14 21 42 206691833 413383666 620075499 1240150998 1446842831 2893685662 4340528493 8681056986