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12898485 = 325286633
BaseRepresentation
bin110001001101…
…000010110101
3220021022101200
4301031002311
511300222420
61140243113
7214430625
oct61150265
926238350
1012898485
11730a906
1243a0499
132897c52
1419da885
1511ebb90
hexc4d0b5

12898485 has 12 divisors (see below), whose sum is σ = 22357452. Its totient is φ = 6879168.

The previous prime is 12898471. The next prime is 12898489. The reversal of 12898485 is 58489821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6380676 + 6517809 = 2526^2 + 2553^2 .

It is not a de Polignac number, because 12898485 - 25 = 12898453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 286633 = 12898485 / (1 + 2 + 8 + 9 + 8 + 4 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 12898485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12898489) 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 11 ways as a sum of consecutive naturals, for example, 143272 + ... + 143361.

It is an arithmetic number, because the mean of its divisors is an integer number (1863121).

Almost surely, 212898485 is an apocalyptic number.

12898485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12898485 is a deficient number, since it is larger than the sum of its proper divisors (9458967).

12898485 is a wasteful number, since it uses less digits than its factorization.

12898485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286644 (or 286641 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 12898485 is about 3591.4460875809. The cubic root of 12898485 is about 234.5198283538.

The spelling of 12898485 in words is "twelve million, eight hundred ninety-eight thousand, four hundred eighty-five".

Divisors: 1 3 5 9 15 45 286633 859899 1433165 2579697 4299495 12898485