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12408071 = 136115647
BaseRepresentation
bin101111010101…
…010100000111
3212100101200012
4233111110013
511134024241
61121540435
7210316064
oct57252407
925311605
1012408071
117005405
1241a471b
132755970
14190dc6b
1511516eb
hexbd5507

12408071 has 8 divisors (see below), whose sum is σ = 13582464. Its totient is φ = 11265120.

The previous prime is 12408043. The next prime is 12408073. The reversal of 12408071 is 17080421.

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 12408071 - 210 = 12407047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12408073) 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, 7031 + ... + 8616.

It is an arithmetic number, because the mean of its divisors is an integer number (1697808).

Almost surely, 212408071 is an apocalyptic number.

12408071 is a deficient number, since it is larger than the sum of its proper divisors (1174393).

12408071 is a wasteful number, since it uses less digits than its factorization.

12408071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15721.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 12408071 is about 3522.5091909036. The cubic root of 12408071 is about 231.5091124328.

Adding to 12408071 its reverse (17080421), we get a palindrome (29488492).

The spelling of 12408071 in words is "twelve million, four hundred eight thousand, seventy-one".

Divisors: 1 13 61 793 15647 203411 954467 12408071