30066881 has 16 divisors (see below), whose sum is σ = 33762960. Its totient is φ = 26584320.

The previous prime is 30066877. The next prime is 30066889. The reversal of 30066881 is 18866003.

It can be written as a sum of positive squares in 8 ways, for example, as 36481 + 30030400 = 191^2 + 5480^2 .

It is a cyclic number.

It is not a de Polignac number, because 30066881 - 2² = 30066877 is a prime.

It is a super-2 number, since 2×30066881² = 1808034666136322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30066889) 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 15 ways as a sum of consecutive naturals, for example, 64991 + ... + 65451.

It is an arithmetic number, because the mean of its divisors is an integer number (2110185).

Almost surely, 2^30066881 is an apocalyptic number.

It is an amenable number.

30066881 is a deficient number, since it is larger than the sum of its proper divisors (3696079).

30066881 is a wasteful number, since it uses less digits than its factorization.

30066881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 30066881 is about 5483.3275481226. The cubic root of 30066881 is about 310.9539845692.

The spelling of 30066881 in words is "thirty million, sixty-six thousand, eight hundred eighty-one".