30766218 has 48 divisors (see below), whose sum is σ = 72049824. Its totient is φ = 8732640.

The previous prime is 30766213. The next prime is 30766223. The reversal of 30766218 is 81266703.

It is an interprime number because it is at equal distance from previous prime (30766213) and next prime (30766223).

It is not an unprimeable number, because it can be changed into a prime (30766213) 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 23 ways as a sum of consecutive naturals, for example, 66508 + ... + 66968.

It is an arithmetic number, because the mean of its divisors is an integer number (1501038).

Almost surely, 2^30766218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30766218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36024912).

30766218 is an abundant number, since it is smaller than the sum of its proper divisors (41283606).

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

30766218 is a wasteful number, since it uses less digits than its factorization.

30766218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707 (or 700 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 30766218 is about 5546.7303882558. The cubic root of 30766218 is about 313.3463962664.

The spelling of 30766218 in words is "thirty million, seven hundred sixty-six thousand, two hundred eighteen".