| Base | Representation |
|---|---|
| bin | 11101101011000000… |
| … | …11011010111000100 |
| 3 | 1112010012020211202100 |
| 4 | 32311200123113010 |
| 5 | 230111100004120 |
| 6 | 11152420512100 |
| 7 | 1102522302006 |
| oct | 166540332704 |
| 9 | 45105224670 |
| 10 | 15930078660 |
| 11 | 6835128971 |
| 12 | 3106b4b630 |
| 13 | 166b444462 |
| 14 | ab1970376 |
| 15 | 6337d3490 |
| hex | 3b581b5c4 |
15930078660 has 144 divisors (see below), whose sum is σ = 48661979184. Its totient is φ = 4218200064.
The previous prime is 15930078641. The next prime is 15930078673. The reversal of 15930078660 is 6687003951.
It is a happy number.
15930078660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 8 ways, for example, as 7984852164 + 7945226496 = 89358^2 + 89136^2 .
It is a super-2 number, since 2×159300786602 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24394894 + ... + 24395546.
It is an arithmetic number, because the mean of its divisors is an integer number (337930411).
Almost surely, 215930078660 is an apocalyptic number.
15930078660 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 15930078660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24330989592).
15930078660 is an abundant number, since it is smaller than the sum of its proper divisors (32731900524).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15930078660 is a wasteful number, since it uses less digits than its factorization.
15930078660 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1414 (or 1409 counting only the distinct ones).
The product of its (nonzero) digits is 272160, while the sum is 45.
The spelling of 15930078660 in words is "fifteen billion, nine hundred thirty million, seventy-eight thousand, six hundred sixty".
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