30866841 has 12 divisors (see below), whose sum is σ = 44722132. Its totient is φ = 20514816.

The previous prime is 30866837. The next prime is 30866863. The reversal of 30866841 is 14866803.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14220441 + 16646400 = 3771^2 + 4080^2 .

It is not a de Polignac number, because 30866841 - 2² = 30866837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30866796 and 30866805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30866831) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2056 + ... + 8121.

Almost surely, 2^30866841 is an apocalyptic number.

It is an amenable number.

30866841 is a deficient number, since it is larger than the sum of its proper divisors (13855291).

30866841 is a wasteful number, since it uses less digits than its factorization.

30866841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10520 (or 10517 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 30866841 is about 5555.7934626838. The cubic root of 30866841 is about 313.6876313969.

The spelling of 30866841 in words is "thirty million, eight hundred sixty-six thousand, eight hundred forty-one".