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12000443 = 721318839
BaseRepresentation
bin101101110001…
…110010111011
3211120200111212
4231301302323
511033003233
61105113335
7204000500
oct55616273
924520455
1012000443
116857124
12402884b
132642270
1418454a7
1510c0a48
hexb71cbb

12000443 has 12 divisors (see below), whose sum is σ = 15034320. Its totient is φ = 9494352.

The previous prime is 12000433. The next prime is 12000467. The reversal of 12000443 is 34400021.

It is a de Polignac number, because none of the positive numbers 2k-12000443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12000433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8783 + ... + 10056.

It is an arithmetic number, because the mean of its divisors is an integer number (1252860).

Almost surely, 212000443 is an apocalyptic number.

12000443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12000443 is a deficient number, since it is larger than the sum of its proper divisors (3033877).

12000443 is a wasteful number, since it uses less digits than its factorization.

12000443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18866 (or 18859 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 12000443 is about 3464.1655560900. The cubic root of 12000443 is about 228.9456657449.

Adding to 12000443 its reverse (34400021), we get a palindrome (46400464).

The spelling of 12000443 in words is "twelve million, four hundred forty-three", and thus it is an aban number.

Divisors: 1 7 13 49 91 637 18839 131873 244907 923111 1714349 12000443