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12980567 = 49126437
BaseRepresentation
bin110001100001…
…000101010111
3220102110222202
4301201011113
511310334232
61142115115
7215222135
oct61410527
926373882
1012980567
117366546
12441ba9b
1328c6412
141a1c755
151216162
hexc61157

12980567 has 4 divisors (see below), whose sum is σ = 13007496. Its totient is φ = 12953640.

The previous prime is 12980563. The next prime is 12980573. The reversal of 12980567 is 76508921.

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 12980567 - 22 = 12980563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12980567.

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 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, 12728 + ... + 13709.

It is an arithmetic number, because the mean of its divisors is an integer number (3251874).

Almost surely, 212980567 is an apocalyptic number.

12980567 is a deficient number, since it is larger than the sum of its proper divisors (26929).

12980567 is an equidigital number, since it uses as much as digits as its factorization.

12980567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26928.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 12980567 is about 3602.8553953774. The cubic root of 12980567 is about 235.0162475563.

The spelling of 12980567 in words is "twelve million, nine hundred eighty thousand, five hundred sixty-seven".

Divisors: 1 491 26437 12980567