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12898297 = 731091621
BaseRepresentation
bin110001001100…
…111111111001
3220021022010201
4301030333321
511300221142
61140242201
7214430236
oct61147771
926238121
1012898297
11730a755
1243a0361
132897b39
1419da78d
1511ebab7
hexc4cff9

12898297 has 8 divisors (see below), whose sum is σ = 13203080. Its totient is φ = 12597120.

The previous prime is 12898289. The next prime is 12898307. The reversal of 12898297 is 79289821.

It can be written as a sum of positive squares in 4 ways, for example, as 4968441 + 7929856 = 2229^2 + 2816^2 .

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 12898297 - 23 = 12898289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12898217) 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, 7147 + ... + 8767.

It is an arithmetic number, because the mean of its divisors is an integer number (1650385).

Almost surely, 212898297 is an apocalyptic number.

It is an amenable number.

12898297 is a deficient number, since it is larger than the sum of its proper divisors (304783).

12898297 is a wasteful number, since it uses less digits than its factorization.

12898297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803.

The product of its digits is 145152, while the sum is 46.

The square root of 12898297 is about 3591.4199141844. The cubic root of 12898297 is about 234.5186889450.

The spelling of 12898297 in words is "twelve million, eight hundred ninety-eight thousand, two hundred ninety-seven".

Divisors: 1 73 109 1621 7957 118333 176689 12898297