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12560806 = 223273061
BaseRepresentation
bin101111111010…
…100110100110
3212122011012001
4233322212212
511203421211
61125115514
7211523266
oct57724646
925564161
1012560806
1170aa135
124258b9a
1327aa33b
14194d7a6
151181ac1
hexbfa9a6

12560806 has 8 divisors (see below), whose sum is σ = 19660464. Its totient is φ = 6007320.

The previous prime is 12560803. The next prime is 12560809. The reversal of 12560806 is 60806521.

It is an interprime number because it is at equal distance from previous prime (12560803) and next prime (12560809).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12560803) 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, 136485 + ... + 136576.

It is an arithmetic number, because the mean of its divisors is an integer number (2457558).

Almost surely, 212560806 is an apocalyptic number.

12560806 is the 2242-nd centered pentagonal number.

12560806 is a deficient number, since it is larger than the sum of its proper divisors (7099658).

12560806 is a wasteful number, since it uses less digits than its factorization.

12560806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273086.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 12560806 is about 3544.1227405382. The cubic root of 12560806 is about 232.4551483991.

It can be divided in two parts, 12560 and 806, that added together give a triangular number (13366 = T163).

The spelling of 12560806 in words is "twelve million, five hundred sixty thousand, eight hundred six".

Divisors: 1 2 23 46 273061 546122 6280403 12560806