30039220 has 12 divisors (see below), whose sum is σ = 63082404. Its totient is φ = 12015680.

The previous prime is 30039203. The next prime is 30039223. The reversal of 30039220 is 2293003.

It can be written as a sum of positive squares in 2 ways, for example, as 16467364 + 13571856 = 4058^2 + 3684^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30039223) 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 3 ways as a sum of consecutive naturals, for example, 750961 + ... + 751000.

It is an arithmetic number, because the mean of its divisors is an integer number (5256867).

Almost surely, 2^30039220 is an apocalyptic number.

It is an amenable number.

30039220 is an abundant number, since it is smaller than the sum of its proper divisors (33043184).

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

30039220 is a wasteful number, since it uses less digits than its factorization.

30039220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501970 (or 1501968 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 30039220 is about 5480.8046854454. The cubic root of 30039220 is about 310.8585979188.

The spelling of 30039220 in words is "thirty million, thirty-nine thousand, two hundred twenty".