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12806164 = 227457363
BaseRepresentation
bin110000110110…
…100000010100
3220002121202101
4300312200110
511234244124
61134251444
7213564520
oct60664024
926077671
1012806164
117257508
124356b84
132864c17
1419b4d80
1511ce644
hexc36814

12806164 has 12 divisors (see below), whose sum is σ = 25612384. Its totient is φ = 5488344.

The previous prime is 12806161. The next prime is 12806173. The reversal of 12806164 is 46160821.

12806164 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 457363 = 12806164 / (1 + 2 + 8 + 0 + 6 + 1 + 6 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12806161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228654 + ... + 228709.

Almost surely, 212806164 is an apocalyptic number.

12806164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12806164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12806164 is a wasteful number, since it uses less digits than its factorization.

12806164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457374 (or 457372 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 12806164 is about 3578.5701055030. The cubic root of 12806164 is about 233.9589622923.

Adding to 12806164 its reverse (46160821), we get a palindrome (58966985).

The spelling of 12806164 in words is "twelve million, eight hundred six thousand, one hundred sixty-four".

Divisors: 1 2 4 7 14 28 457363 914726 1829452 3201541 6403082 12806164