Search a number
-
+
8063281 = 19940519
BaseRepresentation
bin11110110000100100110001
3120011122202001
4132300210301
54031011111
6444454001
7125352052
oct36604461
916148661
108063281
114608076
12284a301
131894195
1410dc729
15a941c1
hex7b0931

8063281 has 4 divisors (see below), whose sum is σ = 8104000. Its totient is φ = 8022564.

The previous prime is 8063269. The next prime is 8063309. The reversal of 8063281 is 1823608.

8063281 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8063281 - 215 = 8030513 is a prime.

It is a super-2 number, since 2×80632812 = 130033000969922, which contains 22 as substring.

It is a Duffinian number.

8063281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8063221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20061 + ... + 20458.

It is an arithmetic number, because the mean of its divisors is an integer number (2026000).

Almost surely, 28063281 is an apocalyptic number.

It is an amenable number.

8063281 is a deficient number, since it is larger than the sum of its proper divisors (40719).

8063281 is a wasteful number, since it uses less digits than its factorization.

8063281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40718.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 8063281 is about 2839.5916960014. The cubic root of 8063281 is about 200.5259572988.

Adding to 8063281 its reverse (1823608), we get a palindrome (9886889).

The spelling of 8063281 in words is "eight million, sixty-three thousand, two hundred eighty-one".

Divisors: 1 199 40519 8063281