30102218 has 8 divisors (see below), whose sum is σ = 45191520. Its totient is φ = 15038380.

The previous prime is 30102211. The next prime is 30102221. The reversal of 30102218 is 81220103.

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

It is a super-2 number, since 2×30102218² = 1812287057039048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30102196 and 30102205.

It is not an unprimeable number, because it can be changed into a prime (30102211) 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, 3068 + ... + 8343.

It is an arithmetic number, because the mean of its divisors is an integer number (5648940).

Almost surely, 2^30102218 is an apocalyptic number.

30102218 is a deficient number, since it is larger than the sum of its proper divisors (15089302).

30102218 is a wasteful number, since it uses less digits than its factorization.

30102218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12732.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 30102218 is about 5486.5488241699. The cubic root of 30102218 is about 311.0757561959.

The spelling of 30102218 in words is "thirty million, one hundred two thousand, two hundred eighteen".