Base | Representation |
---|---|
bin | 101111100101… |
… | …000111010001 |
3 | 212110200110000 |
4 | 233211013101 |
5 | 11143112120 |
6 | 1123200213 |
7 | 211005543 |
oct | 57450721 |
9 | 25420400 |
10 | 12472785 |
11 | 7049a96 |
12 | 4216069 |
13 | 2779260 |
14 | 1929693 |
15 | 1165990 |
hex | be51d1 |
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".
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