30019530 has 16 divisors (see below), whose sum is σ = 72046944. Its totient is φ = 8005200.

The previous prime is 30019529. The next prime is 30019537. The reversal of 30019530 is 3591003.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30019497 and 30019506.

It is not an unprimeable number, because it can be changed into a prime (30019537) 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, 500296 + ... + 500355.

It is an arithmetic number, because the mean of its divisors is an integer number (4502934).

Almost surely, 2^30019530 is an apocalyptic number.

30019530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30019530 is an abundant number, since it is smaller than the sum of its proper divisors (42027414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30019530 is a wasteful number, since it uses less digits than its factorization.

30019530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000661.

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 30019530 is about 5479.0081219140. The cubic root of 30019530 is about 310.7906629144.

The spelling of 30019530 in words is "thirty million, nineteen thousand, five hundred thirty".