Base | Representation |
---|---|
bin | 101101110010001… |
… | …001100110001001 |
3 | 1222112100121020021 |
4 | 231302021212021 |
5 | 3033114334400 |
6 | 204115300441 |
7 | 25014631324 |
oct | 5562114611 |
9 | 1875317207 |
10 | 768121225 |
11 | 364647933 |
12 | 1952aa721 |
13 | c31a0a01 |
14 | 7402b7bb |
15 | 4767b71a |
hex | 2dc89989 |
768121225 has 27 divisors (see below), whose sum is σ = 999831189. Its totient is φ = 585340800.
The previous prime is 768121213. The next prime is 768121267. The reversal of 768121225 is 522121867.
It is a happy number.
The square root of 768121225 is 27715.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in 4 ways, for example, as 11431161 + 756690064 = 3381^2 + 27508^2 .
It is not a de Polignac number, because 768121225 - 213 = 768113033 is a prime.
It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3187105 + ... + 3187345.
Almost surely, 2768121225 is an apocalyptic number.
768121225 is the 27715-th square number.
768121225 is the 13858-th centered octagonal number.
It is an amenable number.
768121225 is a deficient number, since it is larger than the sum of its proper divisors (231709964).
768121225 is an equidigital number, since it uses as much as digits as its factorization.
768121225 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 538 (or 269 counting only the distinct ones).
The product of its digits is 13440, while the sum is 34.
The cubic root of 768121225 is about 915.8195748355.
The spelling of 768121225 in words is "seven hundred sixty-eight million, one hundred twenty-one thousand, two hundred twenty-five".
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