30705018 has 8 divisors (see below), whose sum is σ = 61410048. Its totient is φ = 10235004.

The previous prime is 30705013. The next prime is 30705019. The reversal of 30705018 is 81050703.

It is a sphenic number, since it is the product of 3 distinct primes.

30705018 is an admirable number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (30705013) 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 3 ways as a sum of consecutive naturals, for example, 2558746 + ... + 2558757.

It is an arithmetic number, because the mean of its divisors is an integer number (7676256).

Almost surely, 2^30705018 is an apocalyptic number.

30705018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30705018 is a wasteful number, since it uses less digits than its factorization.

30705018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5117508.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 30705018 is about 5541.2108784994. The cubic root of 30705018 is about 313.1384893452.

The spelling of 30705018 in words is "thirty million, seven hundred five thousand, eighteen".