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12960288 = 2532114091
BaseRepresentation
bin110001011100…
…001000100000
3220101110011200
4301130020200
511304212123
61141441200
7215106045
oct61341040
926343150
1012960288
117352290
124410200
1328ba113
141a151cc
151210143
hexc5c220

12960288 has 72 divisors (see below), whose sum is σ = 40216176. Its totient is φ = 3926400.

The previous prime is 12960287. The next prime is 12960289. The reversal of 12960288 is 88206921.

It is an interprime number because it is at equal distance from previous prime (12960287) and next prime (12960289).

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12960281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1123 + ... + 5213.

It is an arithmetic number, because the mean of its divisors is an integer number (558558).

Almost surely, 212960288 is an apocalyptic number.

12960288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12960288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20108088).

12960288 is an abundant number, since it is smaller than the sum of its proper divisors (27255888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12960288 is a wasteful number, since it uses less digits than its factorization.

12960288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4118 (or 4107 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 12960288 is about 3600.0399997778. The cubic root of 12960288 is about 234.8937983984.

The spelling of 12960288 in words is "twelve million, nine hundred sixty thousand, two hundred eighty-eight".

Divisors: 1 2 3 4 6 8 9 11 12 16 18 22 24 32 33 36 44 48 66 72 88 96 99 132 144 176 198 264 288 352 396 528 792 1056 1584 3168 4091 8182 12273 16364 24546 32728 36819 45001 49092 65456 73638 90002 98184 130912 135003 147276 180004 196368 270006 294552 360008 392736 405009 540012 589104 720016 810018 1080024 1178208 1440032 1620036 2160048 3240072 4320096 6480144 12960288