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23028544669 = 139718262129
BaseRepresentation
bin10101011100100110…
…111011010010011101
32012102220021021111211
4111130212323102131
5334130301412134
614325033344421
71443445254124
oct253446732235
965386237454
1023028544669
1198480164a9
124568268111
13222cc748c0
1411865dcabb
158eba9c764
hex55c9bb49d

23028544669 has 8 divisors (see below), whose sum is σ = 25055642360. Its totient is φ = 21037971456.

The previous prime is 23028544667. The next prime is 23028544681. The reversal of 23028544669 is 96644582032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6302295769 + 16726248900 = 79387^2 + 129330^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 23028544669 - 21 = 23028544667 is a prime.

It is a super-2 number, since 2×230285446692 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23028544667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9129804 + ... + 9132325.

It is an arithmetic number, because the mean of its divisors is an integer number (3131955295).

Almost surely, 223028544669 is an apocalyptic number.

It is an amenable number.

23028544669 is a deficient number, since it is larger than the sum of its proper divisors (2027097691).

23028544669 is a wasteful number, since it uses less digits than its factorization.

23028544669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18262239.

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 23028544669 in words is "twenty-three billion, twenty-eight million, five hundred forty-four thousand, six hundred sixty-nine".

Divisors: 1 13 97 1261 18262129 237407677 1771426513 23028544669