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28760390343 = 3228311291869
BaseRepresentation
bin11010110010010000…
…001011101011000111
32202020100202012121100
4122302100023223013
5432400124442333
621113510551143
72035465166346
oct326220135307
982210665540
1028760390343
1111219543a43
1256a79684b3
132934612969
14156b967b5d
15b34db7213
hex6b240bac7

28760390343 has 12 divisors (see below), whose sum is σ = 41689584040. Its totient is φ = 19105840656.

The previous prime is 28760390333. The next prime is 28760390369. The reversal of 28760390343 is 34309306782.

28760390343 is a `hidden beast` number, since 2 + 8 + 7 + 603 + 9 + 0 + 34 + 3 = 666.

It is not a de Polignac number, because 28760390343 - 212 = 28760386247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28760390333) 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, 5643388 + ... + 5648481.

Almost surely, 228760390343 is an apocalyptic number.

28760390343 is a deficient number, since it is larger than the sum of its proper divisors (12929193697).

28760390343 is a wasteful number, since it uses less digits than its factorization.

28760390343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11292158 (or 11292155 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 28760390343 in words is "twenty-eight billion, seven hundred sixty million, three hundred ninety thousand, three hundred forty-three".

Divisors: 1 3 9 283 849 2547 11291869 33875607 101626821 3195598927 9586796781 28760390343