30930 has 16 divisors (see below), whose sum is σ = 74304. Its totient is φ = 8240.

The previous prime is 30911. The next prime is 30931. The reversal of 30930 is 3903.

30930 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (15) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a nialpdrome in base 8.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 30930.

It is not an unprimeable number, because it can be changed into a prime (30931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486 + ... + 545.

It is an arithmetic number, because the mean of its divisors is an integer number (4644).

2³⁰⁹³⁰ is an apocalyptic number.

30930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30930 is an abundant number, since it is smaller than the sum of its proper divisors (43374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37152).

30930 is a wasteful number, since it uses less digits than its factorization.

30930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041.

The product of its (nonzero) digits is 81, while the sum is 15.

The square root of 30930 is about 175.8692696295. The cubic root of 30930 is about 31.3901439038.

The spelling of 30930 in words is "thirty thousand, nine hundred thirty".