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12948091 = 136431549
BaseRepresentation
bin110001011001…
…001001111011
3220100211102221
4301121021323
511303314331
61141304511
7215025352
oct61311173
926324387
1012948091
117344102
124405137
1328b46c0
141a10999
15120b711
hexc5927b

12948091 has 8 divisors (see below), whose sum is σ = 13974800. Its totient is φ = 11925792.

The previous prime is 12948041. The next prime is 12948097. The reversal of 12948091 is 19084921.

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 12948091 - 215 = 12915323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12948097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7585 + ... + 9133.

It is an arithmetic number, because the mean of its divisors is an integer number (1746850).

Almost surely, 212948091 is an apocalyptic number.

12948091 is a deficient number, since it is larger than the sum of its proper divisors (1026709).

12948091 is a wasteful number, since it uses less digits than its factorization.

12948091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 12948091 is about 3598.3455920742. The cubic root of 12948091 is about 234.8200886453.

The spelling of 12948091 in words is "twelve million, nine hundred forty-eight thousand, ninety-one".

Divisors: 1 13 643 1549 8359 20137 996007 12948091