Search a number
-
+
80807 = 194253
BaseRepresentation
bin10011101110100111
311002211212
4103232213
510041212
61422035
7454406
oct235647
9132755
1080807
1155791
123a91b
132aa1c
142163d
1518e22
hex13ba7

80807 has 4 divisors (see below), whose sum is σ = 85080. Its totient is φ = 76536.

The previous prime is 80803. The next prime is 80809. The reversal of 80807 is 70808.

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

It is a cyclic number.

It is not a de Polignac number, because 80807 - 22 = 80803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 80807.

It is not an unprimeable number, because it can be changed into a prime (80803) 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, 2108 + ... + 2145.

It is an arithmetic number, because the mean of its divisors is an integer number (21270).

280807 is an apocalyptic number.

80807 is a deficient number, since it is larger than the sum of its proper divisors (4273).

80807 is a wasteful number, since it uses less digits than its factorization.

80807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4272.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 80807 is about 284.2657207614. The cubic root of 80807 is about 43.2330950673.

Subtracting from 80807 its reverse (70808), we obtain a palindrome (9999).

The spelling of 80807 in words is "eighty thousand, eight hundred seven".

Divisors: 1 19 4253 80807