30808 has 8 divisors (see below), whose sum is σ = 57780. Its totient is φ = 15400.

The previous prime is 30803. The next prime is 30809. The reversal of 30808 is 80803.

30808 is nontrivially palindromic in base 7.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1918 + ... + 1933.

2³⁰⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

30808 is a deficient number, since it is larger than the sum of its proper divisors (26972).

30808 is a wasteful number, since it uses less digits than its factorization.

30808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3857 (or 3853 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 30808 is about 175.5220783833. The cubic root of 30808 is about 31.3488178583.

It can be divided in two parts, 30 and 808, that added together give a palindrome (838).

The spelling of 30808 in words is "thirty thousand, eight hundred eight".