30195 has 24 divisors (see below), whose sum is σ = 58032. Its totient is φ = 14400.

The previous prime is 30187. The next prime is 30197. The reversal of 30195 is 59103.

30195 = 26² + 27² + ... + 47².

30195 is nontrivially palindromic in base 14.

It is not a de Polignac number, because 30195 - 2³ = 30187 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 465 + ... + 525.

It is an arithmetic number, because the mean of its divisors is an integer number (2418).

2³⁰¹⁹⁵ is an apocalyptic number.

30195 is a deficient number, since it is larger than the sum of its proper divisors (27837).

30195 is a wasteful number, since it uses less digits than its factorization.

30195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 30195 is about 173.7670854909. The cubic root of 30195 is about 31.1395030877.

Adding to 30195 its reverse (59103), we get a palindrome (89298).

It can be divided in two parts, 30 and 195, that added together give a square (225 = 15²).

The spelling of 30195 in words is "thirty thousand, one hundred ninety-five".