Base | Representation |
---|---|
bin | 110101011100… |
… | …1110101110100 |
3 | 1221201202221121 |
4 | 1222321311310 |
5 | 24133233210 |
6 | 2440353324 |
7 | 460126102 |
oct | 152716564 |
9 | 57652847 |
10 | 28024180 |
11 | 14900a88 |
12 | 9475844 |
13 | 5a62872 |
14 | 3a16c72 |
15 | 26d86da |
hex | 1ab9d74 |
28024180 has 24 divisors (see below), whose sum is σ = 59002272. Its totient is φ = 11180832.
The previous prime is 28024163. The next prime is 28024181. The reversal of 28024180 is 8142082.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (28024181) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7279 + ... + 10441.
It is an arithmetic number, because the mean of its divisors is an integer number (2458428).
Almost surely, 228024180 is an apocalyptic number.
28024180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
28024180 is an abundant number, since it is smaller than the sum of its proper divisors (30978092).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28024180 is a wasteful number, since it uses less digits than its factorization.
28024180 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3615 (or 3613 counting only the distinct ones).
The product of its (nonzero) digits is 1024, while the sum is 25.
The square root of 28024180 is about 5293.7869243104. The cubic root of 28024180 is about 303.7462824205.
The spelling of 28024180 in words is "twenty-eight million, twenty-four thousand, one hundred eighty".
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