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12705486 = 232117581
BaseRepresentation
bin110000011101…
…111011001110
3212220111122120
4300131323032
511223033421
61132153410
7212665143
oct60357316
925814576
1012705486
117198902
124308866
13282b151
14198a3ca
1511ae8c6
hexc1dece

12705486 has 8 divisors (see below), whose sum is σ = 25410984. Its totient is φ = 4235160.

The previous prime is 12705481. The next prime is 12705493. The reversal of 12705486 is 68450721.

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

12705486 is an admirable number.

It is a super-2 number, since 2×127054862 = 322858748992392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12705481) 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, 1058785 + ... + 1058796.

It is an arithmetic number, because the mean of its divisors is an integer number (3176373).

Almost surely, 212705486 is an apocalyptic number.

12705486 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.

12705486 is a wasteful number, since it uses less digits than its factorization.

12705486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117586.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 12705486 is about 3564.4755574979. The cubic root of 12705486 is about 233.3442448412.

The spelling of 12705486 in words is "twelve million, seven hundred five thousand, four hundred eighty-six".

Divisors: 1 2 3 6 2117581 4235162 6352743 12705486