538305220 has 24 divisors (see below), whose sum is σ = 1140816600. Its totient is φ = 213345792.

The previous prime is 538305217. The next prime is 538305223. The reversal of 538305220 is 22503835.

It is an interprime number because it is at equal distance from previous prime (538305217) and next prime (538305223).

It can be written as a sum of positive squares in 4 ways, for example, as 69755904 + 468549316 = 8352^2 + 21646^2 .

It is not an unprimeable number, because it can be changed into a prime (538305223) 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 7 ways as a sum of consecutive naturals, for example, 121285 + ... + 125644.

It is an arithmetic number, because the mean of its divisors is an integer number (47534025).

Almost surely, 2^538305220 is an apocalyptic number.

It is an amenable number.

538305220 is an abundant number, since it is smaller than the sum of its proper divisors (602511380).

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

538305220 is a wasteful number, since it uses less digits than its factorization.

538305220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247047 (or 247045 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 538305220 is about 23201.4055608707. The cubic root of 538305220 is about 813.4724772392.

The spelling of 538305220 in words is "five hundred thirty-eight million, three hundred five thousand, two hundred twenty".