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12712808 = 233135077
BaseRepresentation
bin110000011111…
…101101101000
3212220212200202
4300133231220
511223302213
61132251332
7213025403
oct60375550
925825622
1012712808
1171a3359
124310b48
132831594
14198cd3a
1511b1b58
hexc1fb68

12712808 has 16 divisors (see below), whose sum is σ = 23917380. Its totient is φ = 6334848.

The previous prime is 12712807. The next prime is 12712823. The reversal of 12712808 is 80821721.

It can be written as a sum of positive squares in 2 ways, for example, as 12687844 + 24964 = 3562^2 + 158^2 .

It is not an unprimeable number, because it can be changed into a prime (12712807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35 + ... + 5042.

Almost surely, 212712808 is an apocalyptic number.

It is an amenable number.

12712808 is a deficient number, since it is larger than the sum of its proper divisors (11204572).

12712808 is a wasteful number, since it uses less digits than its factorization.

12712808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5396 (or 5392 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 12712808 is about 3565.5024891311. The cubic root of 12712808 is about 233.3890606124.

The spelling of 12712808 in words is "twelve million, seven hundred twelve thousand, eight hundred eight".

Divisors: 1 2 4 8 313 626 1252 2504 5077 10154 20308 40616 1589101 3178202 6356404 12712808