| Base | Representation |
|---|---|
| bin | 111100110011000… |
| … | …000000100111100 |
| 3 | 2122002022111112211 |
| 4 | 330303000010330 |
| 5 | 4042110040440 |
| 6 | 245114110204 |
| 7 | 34163610400 |
| oct | 7463000474 |
| 9 | 2562274484 |
| 10 | 1020002620 |
| 11 | 48384607a |
| 12 | 24571b364 |
| 13 | 133421860 |
| 14 | 99677100 |
| 15 | 5e832eea |
| hex | 3ccc013c |
1020002620 has 216 divisors, whose sum is σ = 2848323744. Its totient is φ = 303545088.
The previous prime is 1020002563. The next prime is 1020002623. The reversal of 1020002620 is 262000201.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (13).
It is a self number, because there is not a number n which added to its sum of digits gives 1020002620.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1020002623) 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 71 ways as a sum of consecutive naturals, for example, 17288151 + ... + 17288209.
It is an arithmetic number, because the mean of its divisors is an integer number (13186684).
Almost surely, 21020002620 is an apocalyptic number.
1020002620 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 1020002620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1424161872).
1020002620 is an abundant number, since it is smaller than the sum of its proper divisors (1828321124).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1020002620 is a wasteful number, since it uses less digits than its factorization.
1020002620 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 177 (or 109 counting only the distinct ones).
The product of its (nonzero) digits is 48, while the sum is 13.
The square root of 1020002620 is about 31937.4798630074. The cubic root of 1020002620 is about 1006.6235714389.
Adding to 1020002620 its reverse (262000201), we get a palindrome (1282002821).
The spelling of 1020002620 in words is "one billion, twenty million, two thousand, six hundred twenty".
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