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2826826681 = 7616798809
BaseRepresentation
bin1010100001111101…
…1111001110111001
321022000011200012111
42220133133032321
521242131423211
61144300412321
7130023426130
oct25037371671
97260150174
102826826681
1112207407a8
1266a8470a1
13360860a13
141cb608917
15118288421
hexa87df3b9

2826826681 has 16 divisors (see below), whose sum is σ = 3332663680. Its totient is φ = 2347678080.

The previous prime is 2826826679. The next prime is 2826826697. The reversal of 2826826681 is 1866286282.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2826826681 - 21 = 2826826679 is a prime.

It is a super-2 number, since 2×28268266812 = 15981898168826951522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2826826621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20796 + ... + 78013.

It is an arithmetic number, because the mean of its divisors is an integer number (208291480).

Almost surely, 22826826681 is an apocalyptic number.

It is an amenable number.

2826826681 is a deficient number, since it is larger than the sum of its proper divisors (505836999).

2826826681 is an equidigital number, since it uses as much as digits as its factorization.

2826826681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98944.

The product of its digits is 884736, while the sum is 49.

The square root of 2826826681 is about 53167.9102560934. The cubic root of 2826826681 is about 1413.9467714219.

The spelling of 2826826681 in words is "two billion, eight hundred twenty-six million, eight hundred twenty-six thousand, six hundred eighty-one".

Divisors: 1 7 61 67 427 469 4087 28609 98809 691663 6027349 6620203 42191443 46341421 403832383 2826826681