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9287993144 = 2315723930941
BaseRepresentation
bin10001010011001101…
…11000011100111000
3212222021222221100002
420221212320130320
5123010211240034
64133345532132
7446110432133
oct105146703470
925867887302
109287993144
113a369147a1
121972644048
13b50335c41
1464178121a
15395617e7e
hex2299b8738

9287993144 has 32 divisors (see below), whose sum is σ = 17599809600. Its totient is φ = 4594961280.

The previous prime is 9287993051. The next prime is 9287993161. The reversal of 9287993144 is 4413997829.

It is a self number, because there is not a number n which added to its sum of digits gives 9287993144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284714 + ... + 315654.

It is an arithmetic number, because the mean of its divisors is an integer number (549994050).

Almost surely, 29287993144 is an apocalyptic number.

It is an amenable number.

9287993144 is a deficient number, since it is larger than the sum of its proper divisors (8311816456).

9287993144 is a wasteful number, since it uses less digits than its factorization.

9287993144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31343 (or 31339 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 56.

The square root of 9287993144 is about 96374.2348555878. The cubic root of 9287993144 is about 2102.0383190205.

The spelling of 9287993144 in words is "nine billion, two hundred eighty-seven million, nine hundred ninety-three thousand, one hundred forty-four".

Divisors: 1 2 4 8 157 239 314 478 628 956 1256 1912 30941 37523 61882 75046 123764 150092 247528 300184 4857737 7394899 9715474 14789798 19430948 29579596 38861896 59159192 1160999143 2321998286 4643996572 9287993144