Search a number
-
+
8230281 = 310212687
BaseRepresentation
bin11111011001010110001001
3120111010211020
4133121112021
54101332111
6452223053
7126645663
oct37312611
916433736
108230281
114711594
12290aa89
1319221b7
141143533
15ac8906
hex7d9589

8230281 has 8 divisors (see below), whose sum is σ = 10988544. Its totient is φ = 5479440.

The previous prime is 8230279. The next prime is 8230291. The reversal of 8230281 is 1820328.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8230281 - 21 = 8230279 is a prime.

It is a super-2 number, since 2×82302812 = 135475050677922, which contains 22 as substring.

8230281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8230291) 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 7 ways as a sum of consecutive naturals, for example, 1720 + ... + 4406.

It is an arithmetic number, because the mean of its divisors is an integer number (1373568).

Almost surely, 28230281 is an apocalyptic number.

It is an amenable number.

8230281 is a deficient number, since it is larger than the sum of its proper divisors (2758263).

8230281 is a wasteful number, since it uses less digits than its factorization.

8230281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3711.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 8230281 is about 2868.8466323594. The cubic root of 8230281 is about 201.9008842897.

The spelling of 8230281 in words is "eight million, two hundred thirty thousand, two hundred eighty-one".

Divisors: 1 3 1021 2687 3063 8061 2743427 8230281