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12980503 = 17763559
BaseRepresentation
bin110001100001…
…000100010111
3220102110220101
4301201010113
511310334003
61142114531
7215222014
oct61410427
926373811
1012980503
117366498
12441ba47
1328c6393
141a1c70b
15121611d
hexc61117

12980503 has 4 divisors (see below), whose sum is σ = 13744080. Its totient is φ = 12216928.

The previous prime is 12980489. The next prime is 12980519. The reversal of 12980503 is 30508921.

12980503 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12980503 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 (12980563) 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, 381763 + ... + 381796.

It is an arithmetic number, because the mean of its divisors is an integer number (3436020).

Almost surely, 212980503 is an apocalyptic number.

12980503 is a deficient number, since it is larger than the sum of its proper divisors (763577).

12980503 is an equidigital number, since it uses as much as digits as its factorization.

12980503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763576.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 12980503 is about 3602.8465135223. The cubic root of 12980503 is about 235.0158613106.

The spelling of 12980503 in words is "twelve million, nine hundred eighty thousand, five hundred three".

Divisors: 1 17 763559 12980503