528230385 has 24 divisors (see below), whose sum is σ = 920358504. Its totient is φ = 280258560.

The previous prime is 528230317. The next prime is 528230399. The reversal of 528230385 is 583032825.

It can be written as a sum of positive squares in 4 ways, for example, as 22924944 + 505305441 = 4788^2 + 22479^2 .

It is not a de Polignac number, because 528230385 - 2⁷ = 528230257 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21726 + ... + 39095.

It is an arithmetic number, because the mean of its divisors is an integer number (38348271).

Almost surely, 2^528230385 is an apocalyptic number.

It is an amenable number.

528230385 is a deficient number, since it is larger than the sum of its proper divisors (392128119).

528230385 is a wasteful number, since it uses less digits than its factorization.

528230385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61025 (or 61022 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 528230385 is about 22983.2631495182. The cubic root of 528230385 is about 808.3655427229.

The spelling of 528230385 in words is "five hundred twenty-eight million, two hundred thirty thousand, three hundred eighty-five".