Base | Representation |
---|---|
bin | 100010011000… |
… | …0101011000000 |
3 | 1020220202212020 |
4 | 1010300223000 |
5 | 14103301102 |
6 | 1442201440 |
7 | 306132315 |
oct | 104605300 |
9 | 36822766 |
10 | 18025152 |
11 | a1a1622 |
12 | 6053280 |
13 | 3971592 |
14 | 2572d0c |
15 | 18b0bbc |
hex | 1130ac0 |
18025152 has 56 divisors (see below), whose sum is σ = 48006000. Its totient is φ = 5968896.
The previous prime is 18025109. The next prime is 18025157. The reversal of 18025152 is 25152081.
It is a super-2 number, since 2×180251522 = 649812209246208, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (24).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18025157) 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, 51474 + ... + 51822.
It is an arithmetic number, because the mean of its divisors is an integer number (857250).
Almost surely, 218025152 is an apocalyptic number.
18025152 is a gapful number since it is divisible by the number (12) 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 18025152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24003000).
18025152 is an abundant number, since it is smaller than the sum of its proper divisors (29980848).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18025152 is a wasteful number, since it uses less digits than its factorization.
18025152 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 633 (or 623 counting only the distinct ones).
The product of its (nonzero) digits is 800, while the sum is 24.
The square root of 18025152 is about 4245.6038439779. The cubic root of 18025152 is about 262.1961509186.
The spelling of 18025152 in words is "eighteen million, twenty-five thousand, one hundred fifty-two".
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