Base | Representation |
---|---|
bin | 1011010011000… |
… | …1000110010001 |
3 | 10022011111210000 |
4 | 2310301012101 |
5 | 44112341100 |
6 | 4411400213 |
7 | 1113532410 |
oct | 264610621 |
9 | 108144700 |
10 | 47387025 |
11 | 24826634 |
12 | 13a53069 |
13 | 9a81c7a |
14 | 6417477 |
15 | 4260900 |
hex | 2d31191 |
47387025 has 60 divisors (see below), whose sum is σ = 100346752. Its totient is φ = 21656160.
The previous prime is 47387017. The next prime is 47387029. The reversal of 47387025 is 52078374.
It is not a de Polignac number, because 47387025 - 23 = 47387017 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (47387029) 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 59 ways as a sum of consecutive naturals, for example, 12504 + ... + 15846.
Almost surely, 247387025 is an apocalyptic number.
47387025 is a gapful number since it is divisible by the number (45) formed by its first and last digit.
It is an amenable number.
47387025 is an abundant number, since it is smaller than the sum of its proper divisors (52959727).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
47387025 is a wasteful number, since it uses less digits than its factorization.
47387025 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3372 (or 3358 counting only the distinct ones).
The product of its (nonzero) digits is 47040, while the sum is 36.
The square root of 47387025 is about 6883.8234288802. The cubic root of 47387025 is about 361.8704729762.
The spelling of 47387025 in words is "forty-seven million, three hundred eighty-seven thousand, twenty-five".
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