30019712 has 16 divisors (see below), whose sum is σ = 59805150. Its totient is φ = 15009792.

The previous prime is 30019711. The next prime is 30019721. The reversal of 30019712 is 21791003.

It can be written as a sum of positive squares in only one way, i.e., 28987456 + 1032256 = 5384^2 + 1016^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (30019711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117137 + ... + 117392.

Almost surely, 2^30019712 is an apocalyptic number.

30019712 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30019712 is a deficient number, since it is larger than the sum of its proper divisors (29785438).

30019712 is an equidigital number, since it uses as much as digits as its factorization.

30019712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234543 (or 234531 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 30019712 is about 5479.0247307345. The cubic root of 30019712 is about 310.7912909920.

The spelling of 30019712 in words is "thirty million, nineteen thousand, seven hundred twelve".