Search a number
-
+
80813041 = 202939829
BaseRepresentation
bin1001101000100…
…01101111110001
312122001201122121
410310101233301
5131142004131
612004034241
72000620351
oct464215761
9178051577
1080813041
1141687041
1223092981
131398648a
14aa38b61
157164911
hex4d11bf1

80813041 has 4 divisors (see below), whose sum is σ = 80854900. Its totient is φ = 80771184.

The previous prime is 80813027. The next prime is 80813093. The reversal of 80813041 is 14031808.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78499600 + 2313441 = 8860^2 + 1521^2 .

It is a cyclic number.

It is not a de Polignac number, because 80813041 - 223 = 72424433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80812997 and 80813015.

It is not an unprimeable number, because it can be changed into a prime (80813011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17886 + ... + 21943.

It is an arithmetic number, because the mean of its divisors is an integer number (20213725).

Almost surely, 280813041 is an apocalyptic number.

It is an amenable number.

80813041 is a deficient number, since it is larger than the sum of its proper divisors (41859).

80813041 is a wasteful number, since it uses less digits than its factorization.

80813041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41858.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 80813041 is about 8989.6073885348. The cubic root of 80813041 is about 432.3417238573.

Adding to 80813041 its reverse (14031808), we get a palindrome (94844849).

The spelling of 80813041 in words is "eighty million, eight hundred thirteen thousand, forty-one".

Divisors: 1 2029 39829 80813041