30308 has 6 divisors (see below), whose sum is σ = 53046. Its totient is φ = 15152.

The previous prime is 30307. The next prime is 30313. The reversal of 30308 is 80303.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16384 + 13924 = 128^2 + 118^2 .

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 30292 and 30301.

It is not an unprimeable number, because it can be changed into a prime (30307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3785 + ... + 3792.

It is an arithmetic number, because the mean of its divisors is an integer number (8841).

2³⁰³⁰⁸ is an apocalyptic number.

It is an amenable number.

30308 is a deficient number, since it is larger than the sum of its proper divisors (22738).

30308 is a wasteful number, since it uses less digits than its factorization.

30308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7581 (or 7579 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30308 is about 174.0919297383. The cubic root of 30308 is about 31.1782996156.

The spelling of 30308 in words is "thirty thousand, three hundred eight".