308806 has 8 divisors (see below), whose sum is σ = 471240. Its totient is φ = 151728.

The previous prime is 308801. The next prime is 308809. The reversal of 308806 is 608803.

308806 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×308806² = 190722291272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308801) by changing a digit.

308806 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 in 3 ways as a sum of consecutive naturals, for example, 1191 + ... + 1426.

It is an arithmetic number, because the mean of its divisors is an integer number (58905).

2³⁰⁸⁸⁰⁶ is an apocalyptic number.

308806 is a deficient number, since it is larger than the sum of its proper divisors (162434).

308806 is a wasteful number, since it uses less digits than its factorization.

308806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2678.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 308806 is about 555.7031581699. The cubic root of 308806 is about 67.5919916286.

It can be divided in two parts, 30 and 8806, that added together give a square (8836 = 94²).

The spelling of 308806 in words is "three hundred eight thousand, eight hundred six".