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22688680869 = 328093116149
BaseRepresentation
bin10101001000010110…
…011100101110100101
32011120012202102000200
4111020112130232211
5332431300241434
614231213101113
71432150414431
oct251026345645
964505672020
1022688680869
119693194828
124492487799
1321a772a26a
14115340d9c1
158cbd17199
hex54859cba5

22688680869 has 12 divisors (see below), whose sum is σ = 32813059500. Its totient is φ = 15107085504.

The previous prime is 22688680849. The next prime is 22688680873. The reversal of 22688680869 is 96808688622.

It can be written as a sum of positive squares in 2 ways, for example, as 14346050625 + 8342630244 = 119775^2 + 91338^2 .

It is not a de Polignac number, because 22688680869 - 219 = 22688156581 is a prime.

It is a super-2 number, since 2×226886808692 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22688680849) 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 11 ways as a sum of consecutive naturals, for example, 1550794 + ... + 1565355.

It is an arithmetic number, because the mean of its divisors is an integer number (2734421625).

Almost surely, 222688680869 is an apocalyptic number.

It is an amenable number.

22688680869 is a deficient number, since it is larger than the sum of its proper divisors (10124378631).

22688680869 is a wasteful number, since it uses less digits than its factorization.

22688680869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116964 (or 3116961 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 63.

The spelling of 22688680869 in words is "twenty-two billion, six hundred eighty-eight million, six hundred eighty thousand, eight hundred sixty-nine".

Divisors: 1 3 9 809 2427 7281 3116149 9348447 28045341 2520964541 7562893623 22688680869