| Base | Representation |
|---|---|
| bin | 11111000010011… |
| … | …000111010100000 |
| 3 | 1100021211022121010 |
| 4 | 133002120322200 |
| 5 | 2031301020112 |
| 6 | 123400500520 |
| 7 | 15622022130 |
| oct | 3702307240 |
| 9 | 1307738533 |
| 10 | 520720032 |
| 11 | 247a29738 |
| 12 | 12647a740 |
| 13 | 83b5b181 |
| 14 | 4d22aac0 |
| 15 | 30aac63c |
| hex | 1f098ea0 |
520720032 has 96 divisors (see below), whose sum is σ = 1576713600. Its totient is φ = 147391488.
The previous prime is 520720021. The next prime is 520720033. The reversal of 520720032 is 230027025.
It is a tau number, because it is divible by the number of its divisors (96).
It is a super-2 number, since 2×5207200322 = 542298703452162048, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (21).
It is a junction number, because it is equal to n+sod(n) for n = 520719990 and 520720008.
It is not an unprimeable number, because it can be changed into a prime (520720033) 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 15 ways as a sum of consecutive naturals, for example, 69694 + ... + 76802.
It is an arithmetic number, because the mean of its divisors is an integer number (16424100).
Almost surely, 2520720032 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 520720032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (788356800).
520720032 is an abundant number, since it is smaller than the sum of its proper divisors (1055993568).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
520720032 is a wasteful number, since it uses less digits than its factorization.
520720032 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7238 (or 7230 counting only the distinct ones).
The product of its (nonzero) digits is 840, while the sum is 21.
The square root of 520720032 is about 22819.2907865253. The cubic root of 520720032 is about 804.5161409485.
Adding to 520720032 its reverse (230027025), we get a palindrome (750747057).
The spelling of 520720032 in words is "five hundred twenty million, seven hundred twenty thousand, thirty-two".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.064 sec. • engine limits •