30115222 has 16 divisors (see below), whose sum is σ = 46791360. Its totient is φ = 14526792.

The previous prime is 30115199. The next prime is 30115237. The reversal of 30115222 is 22251103.

It is a super-2 number, since 2×30115222² = 1813853192218568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30115196 and 30115205.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5029 + ... + 9247.

It is an arithmetic number, because the mean of its divisors is an integer number (2924460).

Almost surely, 2^30115222 is an apocalyptic number.

30115222 is a deficient number, since it is larger than the sum of its proper divisors (16676138).

30115222 is a wasteful number, since it uses less digits than its factorization.

30115222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4347.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 30115222 is about 5487.7337763416. The cubic root of 30115222 is about 311.1205441112.

Adding to 30115222 its reverse (22251103), we get a palindrome (52366325).

The spelling of 30115222 in words is "thirty million, one hundred fifteen thousand, two hundred twenty-two".