| Base | Representation |
|---|---|
| bin | 1011010101101… |
| … | …0001101110000 |
| 3 | 10022111001210121 |
| 4 | 2311122031300 |
| 5 | 44133233230 |
| 6 | 4415140024 |
| 7 | 1115133412 |
| oct | 265321560 |
| 9 | 108431717 |
| 10 | 47555440 |
| 11 | 24931119 |
| 12 | 13b14614 |
| 13 | 9b1081a |
| 14 | 645c9b2 |
| 15 | 429577a |
| hex | 2d5a370 |
47555440 has 40 divisors (see below), whose sum is σ = 111399120. Its totient is φ = 18878976.
The previous prime is 47555437. The next prime is 47555441. The reversal of 47555440 is 4455574.
47555440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a tau number, because it is divible by the number of its divisors (40).
It is a junction number, because it is equal to n+sod(n) for n = 47555396 and 47555405.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (47555441) by changing a digit.
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 7 ways as a sum of consecutive naturals, for example, 8791 + ... + 13129.
It is an arithmetic number, because the mean of its divisors is an integer number (2784978).
Almost surely, 247555440 is an apocalyptic number.
47555440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 47555440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55699560).
47555440 is an abundant number, since it is smaller than the sum of its proper divisors (63843680).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
47555440 is a wasteful number, since it uses less digits than its factorization.
47555440 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4489 (or 4483 counting only the distinct ones).
The product of its (nonzero) digits is 56000, while the sum is 34.
The square root of 47555440 is about 6896.0452434711. The cubic root of 47555440 is about 362.2986658445.
The spelling of 47555440 in words is "forty-seven million, five hundred fifty-five thousand, four hundred forty".
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