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12541389 = 37597209
BaseRepresentation
bin101111110101…
…110111001101
3212121011112220
4233311313031
511202311024
61124445553
7211412550
oct57656715
925534486
1012541389
117096593
1242498b9
1327a1553
141946697
15117ae79
hexbf5dcd

12541389 has 8 divisors (see below), whose sum is σ = 19110720. Its totient is φ = 7166496.

The previous prime is 12541381. The next prime is 12541411. The reversal of 12541389 is 98314521.

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

It is not a de Polignac number, because 12541389 - 23 = 12541381 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12541381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298584 + ... + 298625.

It is an arithmetic number, because the mean of its divisors is an integer number (2388840).

Almost surely, 212541389 is an apocalyptic number.

It is an amenable number.

12541389 is a deficient number, since it is larger than the sum of its proper divisors (6569331).

12541389 is an equidigital number, since it uses as much as digits as its factorization.

12541389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597219.

The product of its digits is 8640, while the sum is 33.

The square root of 12541389 is about 3541.3823572159. The cubic root of 12541389 is about 232.3353071147.

It can be divided in two parts, 125 and 41389, that added together give a palindrome (41514).

The spelling of 12541389 in words is "twelve million, five hundred forty-one thousand, three hundred eighty-nine".

Divisors: 1 3 7 21 597209 1791627 4180463 12541389