30140224 has 14 divisors (see below), whose sum is σ = 59809634. Its totient is φ = 15070080.

The previous prime is 30140221. The next prime is 30140239. The reversal of 30140224 is 42204103.

It can be written as a sum of positive squares in only one way, i.e., 19642624 + 10497600 = 4432^2 + 3240^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 30140198 and 30140207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30140221) 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 as a sum of consecutive naturals, namely, 235407 + ... + 235534.

Almost surely, 2^30140224 is an apocalyptic number.

It is an amenable number.

30140224 is a deficient number, since it is larger than the sum of its proper divisors (29669410).

30140224 is an equidigital number, since it uses as much as digits as its factorization.

30140224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470953 (or 470943 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 30140224 is about 5490.0112932489. The cubic root of 30140224 is about 311.2066189009.

Adding to 30140224 its reverse (42204103), we get a palindrome (72344327).

The spelling of 30140224 in words is "thirty million, one hundred forty thousand, two hundred twenty-four".