30304388 has 12 divisors (see below), whose sum is σ = 53192412. Its totient is φ = 15106560.

The previous prime is 30304381. The next prime is 30304397. The reversal of 30304388 is 88340303.

It can be written as a sum of positive squares in 2 ways, for example, as 4008004 + 26296384 = 2002^2 + 5128^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30304388.

It is not an unprimeable number, because it can be changed into a prime (30304381) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 9893 + ... + 12588.

It is an arithmetic number, because the mean of its divisors is an integer number (4432701).

Almost surely, 2^30304388 is an apocalyptic number.

It is an amenable number.

30304388 is a deficient number, since it is larger than the sum of its proper divisors (22888024).

30304388 is a wasteful number, since it uses less digits than its factorization.

30304388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22822 (or 22820 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 30304388 is about 5504.9421432019. The cubic root of 30304388 is about 311.7706099329.

The spelling of 30304388 in words is "thirty million, three hundred four thousand, three hundred eighty-eight".