| Base | Representation |
|---|---|
| bin | 1100001010001… |
| … | …11101100010000 |
| 3 | 21002221102021020 |
| 4 | 12011013230100 |
| 5 | 202103134040 |
| 6 | 14042155440 |
| 7 | 2346014121 |
| oct | 605075420 |
| 9 | 232842236 |
| 10 | 102005520 |
| 11 | 52641291 |
| 12 | 2a1b2b80 |
| 13 | 181965c6 |
| 14 | d794048 |
| 15 | 8e4dcd0 |
| hex | 6147b10 |
102005520 has 80 divisors (see below), whose sum is σ = 317188032. Its totient is φ = 27118080.
The previous prime is 102005489. The next prime is 102005521. The reversal of 102005520 is 25500201.
It is a tau number, because it is divible by the number of its divisors (80).
It is a super-2 number, since 2×1020055202 = 20810252220940800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a self number, because there is not a number n which added to its sum of digits gives 102005520.
It is not an unprimeable number, because it can be changed into a prime (102005521) 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 15 ways as a sum of consecutive naturals, for example, 153990 + ... + 154650.
Almost surely, 2102005520 is an apocalyptic number.
102005520 is a gapful number since it is divisible by the number (10) 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 102005520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158594016).
102005520 is an abundant number, since it is smaller than the sum of its proper divisors (215182512).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
102005520 is a wasteful number, since it uses less digits than its factorization.
102005520 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1320 (or 1314 counting only the distinct ones).
The product of its (nonzero) digits is 100, while the sum is 15.
The square root of 102005520 is about 10099.7782153867. The cubic root of 102005520 is about 467.2413011981.
Adding to 102005520 its reverse (25500201), we get a palindrome (127505721).
The spelling of 102005520 in words is "one hundred two million, five thousand, five hundred twenty".
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