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12808072 = 2317412297
BaseRepresentation
bin110000110110…
…111110001000
3220002201101001
4300312332020
511234324242
61134304344
7213603214
oct60667610
926081331
1012808072
117258992
1243580b4
132865a54
1419b5944
1511ceeb7
hexc36f88

12808072 has 32 divisors (see below), whose sum is σ = 26059320. Its totient is φ = 5877760.

The previous prime is 12808063. The next prime is 12808091. The reversal of 12808072 is 27080821.

12808072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9400356 + 3407716 = 3066^2 + 1846^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12808072.

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, 4428 + ... + 6724.

Almost surely, 212808072 is an apocalyptic number.

It is an amenable number.

12808072 is an abundant number, since it is smaller than the sum of its proper divisors (13251248).

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

12808072 is a wasteful number, since it uses less digits than its factorization.

12808072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361 (or 2357 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 12808072 is about 3578.8366824989. The cubic root of 12808072 is about 233.9705809559.

Adding to 12808072 its reverse (27080821), we get a palindrome (39888893).

The spelling of 12808072 in words is "twelve million, eight hundred eight thousand, seventy-two".

Divisors: 1 2 4 8 17 34 41 68 82 136 164 328 697 1394 2297 2788 4594 5576 9188 18376 39049 78098 94177 156196 188354 312392 376708 753416 1601009 3202018 6404036 12808072