30855885 has 16 divisors (see below), whose sum is σ = 49455360. Its totient is φ = 16427840.

The previous prime is 30855863. The next prime is 30855887. The reversal of 30855885 is 58855803.

It is not a de Polignac number, because 30855885 - 2¹⁰ = 30854861 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30855887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9355 + ... + 12215.

It is an arithmetic number, because the mean of its divisors is an integer number (3090960).

Almost surely, 2^30855885 is an apocalyptic number.

It is an amenable number.

30855885 is a deficient number, since it is larger than the sum of its proper divisors (18599475).

30855885 is a wasteful number, since it uses less digits than its factorization.

30855885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588.

The product of its (nonzero) digits is 192000, while the sum is 42.

The square root of 30855885 is about 5554.8073773984. The cubic root of 30855885 is about 313.6505131574.

The spelling of 30855885 in words is "thirty million, eight hundred fifty-five thousand, eight hundred eighty-five".