30618068 has 18 divisors (see below), whose sum is σ = 58021614. Its totient is φ = 14131104.

The previous prime is 30618061. The next prime is 30618073. The reversal of 30618068 is 86081603.

It can be written as a sum of positive squares in 3 ways, for example, as 169744 + 30448324 = 412^2 + 5518^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30618061) 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 5 ways as a sum of consecutive naturals, for example, 21971 + ... + 23322.

It is an arithmetic number, because the mean of its divisors is an integer number (3223423).

Almost surely, 2^30618068 is an apocalyptic number.

It is an amenable number.

30618068 is a deficient number, since it is larger than the sum of its proper divisors (27403546).

30618068 is a wasteful number, since it uses less digits than its factorization.

30618068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45323 (or 45308 counting only the distinct ones).

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

The square root of 30618068 is about 5533.3595581708. The cubic root of 30618068 is about 312.8426296385.

The spelling of 30618068 in words is "thirty million, six hundred eighteen thousand, sixty-eight".