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12447141 = 373971493
BaseRepresentation
bin101111011110…
…110110100101
3212102101021020
4233132312211
511141302031
61122441353
7210541020
oct57366645
925371236
1012447141
1170317a3
124203259
13276a695
1419201b7
15115d096
hexbdeda5

12447141 has 16 divisors (see below), whose sum is σ = 19027584. Its totient is φ = 7089984.

The previous prime is 12447121. The next prime is 12447173. The reversal of 12447141 is 14174421.

12447141 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12447141 - 215 = 12414373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12447121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7591 + ... + 9083.

It is an arithmetic number, because the mean of its divisors is an integer number (1189224).

Almost surely, 212447141 is an apocalyptic number.

It is an amenable number.

12447141 is a deficient number, since it is larger than the sum of its proper divisors (6580443).

12447141 is a wasteful number, since it uses less digits than its factorization.

12447141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900.

The product of its digits is 896, while the sum is 24.

The square root of 12447141 is about 3528.0505948753. The cubic root of 12447141 is about 231.7518464841.

It can be divided in two parts, 1244 and 7141, that added together give a triangular number (8385 = T129).

The spelling of 12447141 in words is "twelve million, four hundred forty-seven thousand, one hundred forty-one".

Divisors: 1 3 7 21 397 1191 1493 2779 4479 8337 10451 31353 592721 1778163 4149047 12447141