80306 has 4 divisors (see below), whose sum is σ = 120462. Its totient is φ = 40152.

The previous prime is 80287. The next prime is 80309. The reversal of 80306 is 60308.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 67081 + 13225 = 259^2 + 115^2 .

It is not an unprimeable number, because it can be changed into a prime (80309) by changing a digit.

80306 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20075 + ... + 20078.

2⁸⁰³⁰⁶ is an apocalyptic number.

80306 is a deficient number, since it is larger than the sum of its proper divisors (40156).

80306 is a wasteful number, since it uses less digits than its factorization.

80306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40155.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 80306 is about 283.3831328784. The cubic root of 80306 is about 43.1435619876.

The spelling of 80306 in words is "eighty thousand, three hundred six".