30221200 has 30 divisors (see below), whose sum is σ = 72607394. Its totient is φ = 12088320.

The previous prime is 30221173. The next prime is 30221207. The reversal of 30221200 is 212203.

It can be written as a sum of positive squares in 3 ways, for example, as 7639696 + 22581504 = 2764^2 + 4752^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30221207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37377 + ... + 38176.

Almost surely, 2^30221200 is an apocalyptic number.

It is an amenable number.

30221200 is an abundant number, since it is smaller than the sum of its proper divisors (42386194).

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

30221200 is a wasteful number, since it uses less digits than its factorization.

30221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75571 (or 75560 counting only the distinct ones).

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

The square root of 30221200 is about 5497.3811947144. The cubic root of 30221200 is about 311.4850699697.

Adding to 30221200 its reverse (212203), we get a palindrome (30433403).

The spelling of 30221200 in words is "thirty million, two hundred twenty-one thousand, two hundred".