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12800695 = 52560139
BaseRepresentation
bin110000110101…
…001010110111
3220002100020211
4300311022313
511234110240
61134210251
7213542545
oct60651267
926070224
1012800695
117253396
124353987
13286259b
1419b2d95
1511ccbea
hexc352b7

12800695 has 4 divisors (see below), whose sum is σ = 15360840. Its totient is φ = 10240552.

The previous prime is 12800663. The next prime is 12800707. The reversal of 12800695 is 59600821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12800695 - 25 = 12800663 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 1280065 + ... + 1280074.

It is an arithmetic number, because the mean of its divisors is an integer number (3840210).

Almost surely, 212800695 is an apocalyptic number.

12800695 is a deficient number, since it is larger than the sum of its proper divisors (2560145).

12800695 is an equidigital number, since it uses as much as digits as its factorization.

12800695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560144.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 12800695 is about 3577.8058918840. The cubic root of 12800695 is about 233.9256527144.

The spelling of 12800695 in words is "twelve million, eight hundred thousand, six hundred ninety-five".

Divisors: 1 5 2560139 12800695