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12980894 = 217381791
BaseRepresentation
bin110001100001…
…001010011110
3220102111102212
4301201022132
511310342034
61142120422
7215223113
oct61411236
926374385
1012980894
117366813
124420112
1328c6604
141a1c90a
1512162ce
hexc6129e

12980894 has 8 divisors (see below), whose sum is σ = 20616768. Its totient is φ = 6108640.

The previous prime is 12980879. The next prime is 12980899. The reversal of 12980894 is 49808921.

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 (12980899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190862 + ... + 190929.

It is an arithmetic number, because the mean of its divisors is an integer number (2577096).

Almost surely, 212980894 is an apocalyptic number.

12980894 is a deficient number, since it is larger than the sum of its proper divisors (7635874).

12980894 is a wasteful number, since it uses less digits than its factorization.

12980894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381810.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 12980894 is about 3602.9007757639. The cubic root of 12980894 is about 235.0182210106.

The spelling of 12980894 in words is "twelve million, nine hundred eighty thousand, eight hundred ninety-four".

Divisors: 1 2 17 34 381791 763582 6490447 12980894