30686853 has 16 divisors (see below), whose sum is σ = 45207936. Its totient is φ = 18416640.

The previous prime is 30686837. The next prime is 30686863. The reversal of 30686853 is 35868603.

It is not a de Polignac number, because 30686853 - 2⁴ = 30686837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30686863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11908 + ... + 14253.

It is an arithmetic number, because the mean of its divisors is an integer number (2825496).

Almost surely, 2^30686853 is an apocalyptic number.

It is an amenable number.

30686853 is a deficient number, since it is larger than the sum of its proper divisors (14521083).

30686853 is a wasteful number, since it uses less digits than its factorization.

30686853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26204.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 30686853 is about 5539.5715538298. The cubic root of 30686853 is about 313.0767265553.

The spelling of 30686853 in words is "thirty million, six hundred eighty-six thousand, eight hundred fifty-three".