30669855 has 32 divisors (see below), whose sum is σ = 51155904. Its totient is φ = 15676416.

The previous prime is 30669841. The next prime is 30669871. The reversal of 30669855 is 55896603.

It is not a de Polignac number, because 30669855 - 2¹¹ = 30667807 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40137 + ... + 40893.

It is an arithmetic number, because the mean of its divisors is an integer number (1598622).

Almost surely, 2^30669855 is an apocalyptic number.

30669855 is a deficient number, since it is larger than the sum of its proper divisors (20486049).

30669855 is a wasteful number, since it uses less digits than its factorization.

30669855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875.

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 30669855 is about 5538.0371071346. The cubic root of 30669855 is about 313.0189096014.

It can be divided in two parts, 3066 and 9855, that added together give a palindrome (12921).

The spelling of 30669855 in words is "thirty million, six hundred sixty-nine thousand, eight hundred fifty-five".