Search a number
-
+
8000841 = 32666947
BaseRepresentation
bin11110100001010101001001
3120001111002110
4132201111021
54022011331
6443252533
7125002032
oct36412511
916044073
108000841
114575172
12281a149
131871934
1410c3a89
15a80946
hex7a1549

8000841 has 4 divisors (see below), whose sum is σ = 10667792. Its totient is φ = 5333892.

The previous prime is 8000831. The next prime is 8000869. The reversal of 8000841 is 1480008.

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 not a de Polignac number, because 8000841 - 25 = 8000809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8000801) 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, 1333471 + ... + 1333476.

It is an arithmetic number, because the mean of its divisors is an integer number (2666948).

Almost surely, 28000841 is an apocalyptic number.

It is an amenable number.

8000841 is a deficient number, since it is larger than the sum of its proper divisors (2666951).

8000841 is a wasteful number, since it uses less digits than its factorization.

8000841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666950.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 8000841 is about 2828.5757900399. The cubic root of 8000841 is about 200.0070080878.

Adding to 8000841 its reverse (1480008), we get a palindrome (9480849).

The spelling of 8000841 in words is "eight million, eight hundred forty-one", and thus it is an aban number.

Divisors: 1 3 2666947 8000841