30020000 has 120 divisors (see below), whose sum is σ = 78724800. Its totient is φ = 11232000.

The previous prime is 30019963. The next prime is 30020041. The reversal of 30020000 is 2003.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 379961 + ... + 380039.

It is an arithmetic number, because the mean of its divisors is an integer number (656040).

Almost surely, 2^30020000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39362400).

30020000 is an abundant number, since it is smaller than the sum of its proper divisors (48704800).

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

30020000 is an equidigital number, since it uses as much as digits as its factorization.

30020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 5.

The square root of 30020000 is about 5479.0510127211. The cubic root of 30020000 is about 310.7922848680.

Adding to 30020000 its reverse (2003), we get a palindrome (30022003).

The spelling of 30020000 in words is "thirty million, twenty thousand".