30457222 has 16 divisors (see below), whose sum is σ = 46825920. Its totient is φ = 14851008.

The previous prime is 30457213. The next prime is 30457223. The reversal of 30457222 is 22275403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30457223) 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 7 ways as a sum of consecutive naturals, for example, 42604 + ... + 43312.

It is an arithmetic number, because the mean of its divisors is an integer number (2926620).

Almost surely, 2^30457222 is an apocalyptic number.

30457222 is a deficient number, since it is larger than the sum of its proper divisors (16368698).

30457222 is a wasteful number, since it uses less digits than its factorization.

30457222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 30457222 is about 5518.8062114918. The cubic root of 30457222 is about 312.2938484615.

The spelling of 30457222 in words is "thirty million, four hundred fifty-seven thousand, two hundred twenty-two".