30030720 has 64 divisors (see below), whose sum is σ = 95729040. Its totient is φ = 8007680.

The previous prime is 30030719. The next prime is 30030733. The reversal of 30030720 is 2703003.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30030720.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 5901 + ... + 9740.

Almost surely, 2^30030720 is an apocalyptic number.

30030720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30030720 is an abundant number, since it is smaller than the sum of its proper divisors (65698320).

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

30030720 is a wasteful number, since it uses less digits than its factorization.

30030720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15663 (or 15651 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 15.

The square root of 30030720 is about 5480.0291970025. The cubic root of 30030720 is about 310.8292746170.

Adding to 30030720 its reverse (2703003), we get a palindrome (32733723).

The spelling of 30030720 in words is "thirty million, thirty thousand, seven hundred twenty".