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12445081 = 111975743
BaseRepresentation
bin101111011110…
…010110011001
3212102021102221
4233132112121
511141220311
61122424041
7210532015
oct57362631
925367387
1012445081
1170301a0
124202021
13276976c
14191d545
15115c671
hexbde599

12445081 has 8 divisors (see below), whose sum is σ = 13647744. Its totient is φ = 11254320.

The previous prime is 12445079. The next prime is 12445091. The reversal of 12445081 is 18054421.

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

It is not a de Polignac number, because 12445081 - 21 = 12445079 is a prime.

It is a super-2 number, since 2×124450812 = 309760082193122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12445021) 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, 705 + ... + 5038.

It is an arithmetic number, because the mean of its divisors is an integer number (1705968).

Almost surely, 212445081 is an apocalyptic number.

12445081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12445081 is a deficient number, since it is larger than the sum of its proper divisors (1202663).

12445081 is a wasteful number, since it uses less digits than its factorization.

12445081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5951.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 12445081 is about 3527.7586368685. The cubic root of 12445081 is about 231.7390608133.

The spelling of 12445081 in words is "twelve million, four hundred forty-five thousand, eighty-one".

Divisors: 1 11 197 2167 5743 63173 1131371 12445081