30868 has 6 divisors (see below), whose sum is σ = 54026. Its totient is φ = 15432.

The previous prime is 30859. The next prime is 30869. The reversal of 30868 is 86803.

30868 is nontrivially palindromic in base 11.

30868 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in only one way, i.e., 26244 + 4624 = 162^2 + 68^2 .

30868 is an undulating number in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30869) by changing a digit.

30868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 3855 + ... + 3862.

2³⁰⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

30868 is a deficient number, since it is larger than the sum of its proper divisors (23158).

30868 is a wasteful number, since it uses less digits than its factorization.

30868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7721 (or 7719 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 30868 is about 175.6929139152. The cubic root of 30868 is about 31.3691557502.

It can be divided in two parts, 30 and 868, that added together give a palindrome (898).

The spelling of 30868 in words is "thirty thousand, eight hundred sixty-eight".