30223156 has 6 divisors (see below), whose sum is σ = 52890530. Its totient is φ = 15111576.

The previous prime is 30223147. The next prime is 30223177. The reversal of 30223156 is 65132203.

It can be written as a sum of positive squares in only one way, i.e., 15523600 + 14699556 = 3940^2 + 3834^2 .

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 as a sum of consecutive naturals, namely, 3777891 + ... + 3777898.

Almost surely, 2^30223156 is an apocalyptic number.

It is an amenable number.

30223156 is a deficient number, since it is larger than the sum of its proper divisors (22667374).

30223156 is a wasteful number, since it uses less digits than its factorization.

30223156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555793 (or 7555791 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 30223156 is about 5497.5590947256. The cubic root of 30223156 is about 311.4917898843.

Adding to 30223156 its reverse (65132203), we get a palindrome (95355359).

The spelling of 30223156 in words is "thirty million, two hundred twenty-three thousand, one hundred fifty-six".