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12902017 = 472111301
BaseRepresentation
bin110001001101…
…111010000001
3220021111020111
4301031322001
511300331032
61140311321
7214444132
oct61157201
926244214
1012902017
117312527
1243a2541
13289973b
1419dbc89
1511ecc47
hexc4de81

12902017 has 8 divisors (see below), whose sum is σ = 13249152. Its totient is φ = 12558000.

The previous prime is 12901981. The next prime is 12902033. The reversal of 12902017 is 71020921.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12902017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12902077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9267 + ... + 10567.

It is an arithmetic number, because the mean of its divisors is an integer number (1656144).

Almost surely, 212902017 is an apocalyptic number.

It is an amenable number.

12902017 is a deficient number, since it is larger than the sum of its proper divisors (347135).

12902017 is a wasteful number, since it uses less digits than its factorization.

12902017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 12902017 is about 3591.9377778575. The cubic root of 12902017 is about 234.5412326360.

Adding to 12902017 its reverse (71020921), we get a palindrome (83922938).

The spelling of 12902017 in words is "twelve million, nine hundred two thousand, seventeen".

Divisors: 1 47 211 1301 9917 61147 274511 12902017