30201220 has 24 divisors (see below), whose sum is σ = 72483264. Its totient is φ = 10354656.

The previous prime is 30201217. The next prime is 30201221. The reversal of 30201220 is 2210203.

It is a super-2 number, since 2×30201220² = 1824227378976800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 30201197 and 30201206.

It is not an unprimeable number, because it can be changed into a prime (30201221) 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, 107722 + ... + 108001.

It is an arithmetic number, because the mean of its divisors is an integer number (3020136).

Almost surely, 2^30201220 is an apocalyptic number.

It is an amenable number.

30201220 is an abundant number, since it is smaller than the sum of its proper divisors (42282044).

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

30201220 is a wasteful number, since it uses less digits than its factorization.

30201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215739 (or 215737 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 30201220 is about 5495.5636653577. The cubic root of 30201220 is about 311.4164112831.

Adding to 30201220 its reverse (2210203), we get a palindrome (32411423).

The spelling of 30201220 in words is "thirty million, two hundred one thousand, two hundred twenty".