30200020 has 24 divisors (see below), whose sum is σ = 65608200. Its totient is φ = 11663232.

The previous prime is 30200011. The next prime is 30200021. The reversal of 30200020 is 2000203.

It can be written as a sum of positive squares in 4 ways, for example, as 8503056 + 21696964 = 2916^2 + 4658^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30199976 and 30200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30200021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25455 + ... + 26614.

It is an arithmetic number, because the mean of its divisors is an integer number (2733675).

Almost surely, 2^30200020 is an apocalyptic number.

It is an amenable number.

30200020 is an abundant number, since it is smaller than the sum of its proper divisors (35408180).

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

30200020 is a wasteful number, since it uses less digits than its factorization.

30200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52107 (or 52105 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 30200020 is about 5495.4544852996. The cubic root of 30200020 is about 311.4122866744.

Adding to 30200020 its reverse (2000203), we get a palindrome (32200223).

The spelling of 30200020 in words is "thirty million, two hundred thousand, twenty".