30938 has 8 divisors (see below), whose sum is σ = 48000. Its totient is φ = 14940.

The previous prime is 30937. The next prime is 30941. The reversal of 30938 is 83903.

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

It is an Ulam number.

It is a nialpdrome in base 8.

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 3 ways as a sum of consecutive naturals, for example, 188 + ... + 311.

It is an arithmetic number, because the mean of its divisors is an integer number (6000).

2³⁰⁹³⁸ is an apocalyptic number.

30938 is a deficient number, since it is larger than the sum of its proper divisors (17062).

30938 is a wasteful number, since it uses less digits than its factorization.

30938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 30938 is about 175.8920123257. The cubic root of 30938 is about 31.3928500090.

The spelling of 30938 in words is "thirty thousand, nine hundred thirty-eight".