| Base | Representation |
|---|---|
| bin | 10011000000011… |
| … | …011110011010100 |
| 3 | 211020000211110200 |
| 4 | 103000123303110 |
| 5 | 1123113142410 |
| 6 | 51350420500 |
| 7 | 10621305105 |
| oct | 2300336324 |
| 9 | 736024420 |
| 10 | 318880980 |
| 11 | 154000000 |
| 12 | 8a961730 |
| 13 | 510aba92 |
| 14 | 304ca3ac |
| 15 | 1cedd3c0 |
| hex | 1301bcd4 |
318880980 has 126 divisors (see below), whose sum is σ = 1063999482. Its totient is φ = 77304480.
The previous prime is 318880963. The next prime is 318880981. The reversal of 318880980 is 89088813.
It can be written as a sum of positive squares in only one way, i.e., 255104784 + 63776196 = 15972^2 + 7986^2 .
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (318880981) 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 41 ways as a sum of consecutive naturals, for example, 28989175 + ... + 28989185.
Almost surely, 2318880980 is an apocalyptic number.
318880980 is a gapful number since it is divisible by the number (30) 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 318880980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531999741).
318880980 is an abundant number, since it is smaller than the sum of its proper divisors (745118502).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
318880980 is an frugal number, since it uses more digits than its factorization.
318880980 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 81 (or 21 counting only the distinct ones).
The product of its (nonzero) digits is 110592, while the sum is 45.
The square root of 318880980 is about 17857.2388683133. The cubic root of 318880980 is about 683.1921569676.
Multiplying 318880980 by its sum of digits (45), we get a square (14349644100 = 1197902).
318880980 divided by its sum of digits (45) gives a square (7086244 = 26622).
The spelling of 318880980 in words is "three hundred eighteen million, eight hundred eighty thousand, nine hundred eighty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.069 sec. • engine limits •