30920200 has 48 divisors (see below), whose sum is σ = 73270980. Its totient is φ = 12130560.

The previous prime is 30920179. The next prime is 30920207. The reversal of 30920200 is 202903.

It can be written as a sum of positive squares in 6 ways, for example, as 25341156 + 5579044 = 5034^2 + 2362^2 .

It is not an unprimeable number, because it can be changed into a prime (30920207) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 9142 + ... + 12058.

Almost surely, 2^30920200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30920200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36635490).

30920200 is an abundant number, since it is smaller than the sum of its proper divisors (42350780).

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

30920200 is a wasteful number, since it uses less digits than its factorization.

30920200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986 (or 2977 counting only the distinct ones).

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

The square root of 30920200 is about 5560.5934935041. The cubic root of 30920200 is about 313.8682828889.

The spelling of 30920200 in words is "thirty million, nine hundred twenty thousand, two hundred".