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12981467 = 313171321
BaseRepresentation
bin110001100001…
…010011011011
3220102112020002
4301201103123
511310401332
61142123215
7215224562
oct61412333
926375202
1012981467
117367194
12442050b
1328c6955
141a1cbd9
151216562
hexc614db

12981467 has 8 divisors (see below), whose sum is σ = 13452672. Its totient is φ = 12513600.

The previous prime is 12981439. The next prime is 12981481. The reversal of 12981467 is 76418921.

12981467 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12981467 - 26 = 12981403 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 12981467.

It is not an unprimeable number, because it can be changed into a prime (12981167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9167 + ... + 10487.

It is an arithmetic number, because the mean of its divisors is an integer number (1681584).

Almost surely, 212981467 is an apocalyptic number.

12981467 is a deficient number, since it is larger than the sum of its proper divisors (471205).

12981467 is a wasteful number, since it uses less digits than its factorization.

12981467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669.

The product of its digits is 24192, while the sum is 38.

The square root of 12981467 is about 3602.9802941454. The cubic root of 12981467 is about 235.0216790020.

The spelling of 12981467 in words is "twelve million, nine hundred eighty-one thousand, four hundred sixty-seven".

Divisors: 1 31 317 1321 9827 40951 418757 12981467