30219018 has 8 divisors (see below), whose sum is σ = 60438048. Its totient is φ = 10073004.

The previous prime is 30218999. The next prime is 30219019. The reversal of 30219018 is 81091203.

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

30219018 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (30219019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2518246 + ... + 2518257.

It is an arithmetic number, because the mean of its divisors is an integer number (7554756).

Almost surely, 2^30219018 is an apocalyptic number.

30219018 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.

30219018 is a wasteful number, since it uses less digits than its factorization.

30219018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5036508.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 30219018 is about 5497.1827330006. The cubic root of 30219018 is about 311.4775732810.

The spelling of 30219018 in words is "thirty million, two hundred nineteen thousand, eighteen".