30209020 has 24 divisors (see below), whose sum is σ = 65155104. Its totient is φ = 11756736.

The previous prime is 30208991. The next prime is 30209021. The reversal of 30209020 is 2090203.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 30208985 and 30209003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30209021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19672 + ... + 21151.

It is an arithmetic number, because the mean of its divisors is an integer number (2714796).

Almost surely, 2^30209020 is an apocalyptic number.

It is an amenable number.

30209020 is an abundant number, since it is smaller than the sum of its proper divisors (34946084).

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

30209020 is a wasteful number, since it uses less digits than its factorization.

30209020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40869 (or 40867 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 30209020 is about 5496.2732828709. The cubic root of 30209020 is about 311.4432185768.

Adding to 30209020 its reverse (2090203), we get a palindrome (32299223).

The spelling of 30209020 in words is "thirty million, two hundred nine thousand, twenty".