30201620 has 24 divisors (see below), whose sum is σ = 65139144. Its totient is φ = 11753856.

The previous prime is 30201617. The next prime is 30201643. The reversal of 30201620 is 2610203.

It can be written as a sum of positive squares in 4 ways, for example, as 19324816 + 10876804 = 4396^2 + 3298^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30201595 and 30201604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19667 + ... + 21146.

It is an arithmetic number, because the mean of its divisors is an integer number (2714131).

Almost surely, 2^30201620 is an apocalyptic number.

It is an amenable number.

30201620 is an abundant number, since it is smaller than the sum of its proper divisors (34937524).

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

30201620 is a wasteful number, since it uses less digits than its factorization.

30201620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40859 (or 40857 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30201620 is about 5495.6000582284. The cubic root of 30201620 is about 311.4177861283.

Adding to 30201620 its reverse (2610203), we get a palindrome (32811823).

The spelling of 30201620 in words is "thirty million, two hundred one thousand, six hundred twenty".