Search a number
-
+
805034081 = 10713015783
BaseRepresentation
bin101111111110111…
…101100001100001
32002002210222011002
4233332331201201
53122042042311
6211514401345
725643451065
oct5776754141
92062728132
10805034081
1138346a025
121a5730255
13caa26337
1478cb9aa5
154aa1d93b
hex2ffbd861

805034081 has 8 divisors (see below), whose sum is σ = 813322944. Its totient is φ = 796759600.

The previous prime is 805034059. The next prime is 805034093. The reversal of 805034081 is 180430508.

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

It is a cyclic number.

It is not a de Polignac number, because 805034081 - 222 = 800839777 is a prime.

It is a super-2 number, since 2×8050340812 = 1296159743143029122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805034981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136316 + ... + 142098.

It is an arithmetic number, because the mean of its divisors is an integer number (101665368).

Almost surely, 2805034081 is an apocalyptic number.

It is an amenable number.

805034081 is a deficient number, since it is larger than the sum of its proper divisors (8288863).

805034081 is a wasteful number, since it uses less digits than its factorization.

805034081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7191.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 805034081 is about 28373.1225105733. The cubic root of 805034081 is about 930.2608745163.

Adding to 805034081 its reverse (180430508), we get a palindrome (985464589).

The spelling of 805034081 in words is "eight hundred five million, thirty-four thousand, eighty-one".

Divisors: 1 107 1301 5783 139207 618781 7523683 805034081