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12480489 = 327397499
BaseRepresentation
bin101111100110…
…111111101001
3212111002000100
4233212333221
511143333424
61123300013
7211040160
oct57467751
925432010
1012480489
11705485a
12421a609
13277c908
14192c3d7
151167dc9
hexbe6fe9

12480489 has 24 divisors (see below), whose sum is σ = 20696000. Its totient is φ = 7099488.

The previous prime is 12480487. The next prime is 12480497. The reversal of 12480489 is 98408421.

It is not a de Polignac number, because 12480489 - 21 = 12480487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12480487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24762 + ... + 25260.

Almost surely, 212480489 is an apocalyptic number.

It is an amenable number.

12480489 is a deficient number, since it is larger than the sum of its proper divisors (8215511).

12480489 is a wasteful number, since it uses less digits than its factorization.

12480489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909 (or 906 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 12480489 is about 3532.7735562869. The cubic root of 12480489 is about 231.9586294147.

The spelling of 12480489 in words is "twelve million, four hundred eighty thousand, four hundred eighty-nine".

Divisors: 1 3 7 9 21 63 397 499 1191 1497 2779 3493 3573 4491 8337 10479 25011 31437 198103 594309 1386721 1782927 4160163 12480489