30161224 has 8 divisors (see below), whose sum is σ = 56552310. Its totient is φ = 15080608.

The previous prime is 30161207. The next prime is 30161231. The reversal of 30161224 is 42216103.

It can be written as a sum of positive squares in only one way, i.e., 30052324 + 108900 = 5482^2 + 330^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1885069 + ... + 1885084.

Almost surely, 2^30161224 is an apocalyptic number.

It is an amenable number.

30161224 is a deficient number, since it is larger than the sum of its proper divisors (26391086).

30161224 is a wasteful number, since it uses less digits than its factorization.

30161224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770159 (or 3770155 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 30161224 is about 5491.9235245950. The cubic root of 30161224 is about 311.2788791664.

Adding to 30161224 its reverse (42216103), we get a palindrome (72377327).

The spelling of 30161224 in words is "thirty million, one hundred sixty-one thousand, two hundred twenty-four".