30605222 has 16 divisors (see below), whose sum is σ = 46766592. Its totient is φ = 15019200.

The previous prime is 30605213. The next prime is 30605227. The reversal of 30605222 is 22250603.

It is a happy number.

It is a super-2 number, since 2×30605222² = 1873359227338568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30605194 and 30605203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30605227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25058 + ... + 26250.

It is an arithmetic number, because the mean of its divisors is an integer number (2922912).

Almost surely, 2^30605222 is an apocalyptic number.

30605222 is a deficient number, since it is larger than the sum of its proper divisors (16161370).

30605222 is a wasteful number, since it uses less digits than its factorization.

30605222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30605222 is about 5532.1986587613. The cubic root of 30605222 is about 312.7988718309.

Adding to 30605222 its reverse (22250603), we get a palindrome (52855825).

The spelling of 30605222 in words is "thirty million, six hundred five thousand, two hundred twenty-two".