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12472785 = 3451323103
BaseRepresentation
bin101111100101…
…000111010001
3212110200110000
4233211013101
511143112120
61123200213
7211005543
oct57450721
925420400
1012472785
117049a96
124216069
132779260
141929693
151165990
hexbe51d1

12472785 has 80 divisors (see below), whose sum is σ = 25369344. Its totient is φ = 5816448.

The previous prime is 12472753. The next prime is 12472799. The reversal of 12472785 is 58727421.

It is not a de Polignac number, because 12472785 - 25 = 12472753 is a prime.

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 121044 + ... + 121146.

Almost surely, 212472785 is an apocalyptic number.

12472785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12472785 is an abundant number, since it is smaller than the sum of its proper divisors (12896559).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12472785 is a wasteful number, since it uses less digits than its factorization.

12472785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 147 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 12472785 is about 3531.6830265470. The cubic root of 12472785 is about 231.9108915121.

The spelling of 12472785 in words is "twelve million, four hundred seventy-two thousand, seven hundred eighty-five".

Divisors: 1 3 5 9 13 15 23 27 39 45 65 69 81 103 115 117 135 195 207 299 309 345 351 405 515 585 621 897 927 1035 1053 1339 1495 1545 1755 1863 2369 2691 2781 3105 4017 4485 4635 5265 6695 7107 8073 8343 9315 11845 12051 13455 13905 20085 21321 24219 30797 35535 36153 40365 41715 60255 63963 92391 106605 108459 121095 153985 180765 191889 277173 319815 461955 542295 831519 959445 1385865 2494557 4157595 12472785