30202020 has 72 divisors (see below), whose sum is σ = 96445440. Its totient is φ = 7629120.

The previous prime is 30202019. The next prime is 30202049. The reversal of 30202020 is 2020203.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 30201993 and 30202011.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 996 + ... + 7835.

It is an arithmetic number, because the mean of its divisors is an integer number (1339520).

Almost surely, 2^30202020 is an apocalyptic number.

30202020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30202020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48222720).

30202020 is an abundant number, since it is smaller than the sum of its proper divisors (66243420).

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

30202020 is a wasteful number, since it uses less digits than its factorization.

30202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8865 (or 8860 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 30202020 is about 5495.6364508581. The cubic root of 30202020 is about 311.4191609615.

Adding to 30202020 its reverse (2020203), we get a palindrome (32222223).

The spelling of 30202020 in words is "thirty million, two hundred two thousand, twenty".