528080305 has 8 divisors (see below), whose sum is σ = 635162472. Its totient is φ = 421486848.

The previous prime is 528080303. The next prime is 528080327. The reversal of 528080305 is 503080825.

It can be written as a sum of positive squares in 4 ways, for example, as 27081616 + 500998689 = 5204^2 + 22383^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 528080305 - 2¹ = 528080303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (528080303) 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, 119794 + ... + 124123.

It is an arithmetic number, because the mean of its divisors is an integer number (79395309).

Almost surely, 2^528080305 is an apocalyptic number.

It is an amenable number.

528080305 is a deficient number, since it is larger than the sum of its proper divisors (107082167).

528080305 is a wasteful number, since it uses less digits than its factorization.

528080305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244355.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 528080305 is about 22979.9979329851. The cubic root of 528080305 is about 808.2889782820.

The spelling of 528080305 in words is "five hundred twenty-eight million, eighty thousand, three hundred five".