| Base | Representation |
|---|---|
| bin | 111011000001000… |
| … | …0011011110010000 |
| 3 | 12010000012010022121 |
| 4 | 1312002003132100 |
| 5 | 13023421000000 |
| 6 | 524255344024 |
| 7 | 100033563421 |
| oct | 16602033620 |
| 9 | 5100163277 |
| 10 | 1980250000 |
| 11 | 926888153 |
| 12 | 473222014 |
| 13 | 257350981 |
| 14 | 14add7648 |
| 15 | b8cb0b1a |
| hex | 76083790 |
1980250000 has 105 divisors (see below), whose sum is σ = 4850348071. Its totient is φ = 783200000.
The previous prime is 1980249967. The next prime is 1980250001. The reversal of 1980250000 is 520891.
The square root of 1980250000 is 44500.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in 10 ways, for example, as 1045358224 + 934891776 = 32332^2 + 30576^2 .
It is a Harshad number since it is a multiple of its sum of digits (25).
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1980250001) 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 20 ways as a sum of consecutive naturals, for example, 22249956 + ... + 22250044.
Almost surely, 21980250000 is an apocalyptic number.
1980250000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
1980250000 is the 44500-th square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1980250000
1980250000 is an abundant number, since it is smaller than the sum of its proper divisors (2870098071).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1980250000 is an frugal number, since it uses more digits than its factorization.
1980250000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 216 (or 96 counting only the distinct ones).
The product of its (nonzero) digits is 720, while the sum is 25.
The cubic root of 1980250000 is about 1255.7600830509.
Multiplying 1980250000 by its sum of digits (25), we get a square (49506250000 = 2225002).
1980250000 divided by its sum of digits (25) gives a square (79210000 = 89002).
Adding to 1980250000 its reverse (520891), we get a palindrome (1980770891).
The spelling of 1980250000 in words is "one billion, nine hundred eighty million, two hundred fifty thousand".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.070 sec. • engine limits •