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12980973 = 34326991
BaseRepresentation
bin110001100001…
…001011101101
3220102111112210
4301201023231
511310342343
61142121033
7215223255
oct61411355
926374483
1012980973
117366885
124420179
1328c6665
141a1c965
151216333
hexc612ed

12980973 has 4 divisors (see below), whose sum is σ = 17307968. Its totient is φ = 8653980.

The previous prime is 12980963. The next prime is 12981011. The reversal of 12980973 is 37908921.

12980973 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12980973 - 212 = 12976877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12980963) 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, 2163493 + ... + 2163498.

It is an arithmetic number, because the mean of its divisors is an integer number (4326992).

Almost surely, 212980973 is an apocalyptic number.

It is an amenable number.

12980973 is a deficient number, since it is larger than the sum of its proper divisors (4326995).

12980973 is an equidigital number, since it uses as much as digits as its factorization.

12980973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4326994.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 12980973 is about 3602.9117391354. The cubic root of 12980973 is about 235.0186977729.

The spelling of 12980973 in words is "twelve million, nine hundred eighty thousand, nine hundred seventy-three".

Divisors: 1 3 4326991 12980973