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12870903 = 34791283
BaseRepresentation
bin110001000110…
…010011110111
3220012220120010
4301012103313
511243332103
61135511303
7214254333
oct61062367
926186503
1012870903
1172a1111
124388533
132888526
1419d07c3
1511e3903
hexc464f7

12870903 has 8 divisors (see below), whose sum is σ = 17526528. Its totient is φ = 8397944.

The previous prime is 12870899. The next prime is 12870919. The reversal of 12870903 is 30907821.

It is a happy number.

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 12870903 - 22 = 12870899 is a prime.

It is a super-3 number, since 3×128709033 (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12870943) 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, 45501 + ... + 45782.

It is an arithmetic number, because the mean of its divisors is an integer number (2190816).

Almost surely, 212870903 is an apocalyptic number.

12870903 is a deficient number, since it is larger than the sum of its proper divisors (4655625).

12870903 is an equidigital number, since it uses as much as digits as its factorization.

12870903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91333.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 12870903 is about 3587.6040751454. The cubic root of 12870903 is about 234.3525440530.

The spelling of 12870903 in words is "twelve million, eight hundred seventy thousand, nine hundred three".

Divisors: 1 3 47 141 91283 273849 4290301 12870903