30442218 has 16 divisors (see below), whose sum is σ = 64089120. Its totient is φ = 9613296.

The previous prime is 30442211. The next prime is 30442219. The reversal of 30442218 is 81224403.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30442211) 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 7 ways as a sum of consecutive naturals, for example, 133405 + ... + 133632.

It is an arithmetic number, because the mean of its divisors is an integer number (4005570).

Almost surely, 2^30442218 is an apocalyptic number.

30442218 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

30442218 is an abundant number, since it is smaller than the sum of its proper divisors (33646902).

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

30442218 is a wasteful number, since it uses less digits than its factorization.

30442218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267061.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 30442218 is about 5517.4466920850. The cubic root of 30442218 is about 312.2425587484.

The spelling of 30442218 in words is "thirty million, four hundred forty-two thousand, two hundred eighteen".