528216369 has 4 divisors (see below), whose sum is σ = 704288496. Its totient is φ = 352144244.

The previous prime is 528216361. The next prime is 528216373. The reversal of 528216369 is 963612825.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 528216369 - 2³ = 528216361 is a prime.

It is a super-2 number, since 2×528216369² = 558025064959088322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 528216369.

It is not an unprimeable number, because it can be changed into a prime (528216361) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 88036059 + ... + 88036064.

It is an arithmetic number, because the mean of its divisors is an integer number (176072124).

Almost surely, 2^528216369 is an apocalyptic number.

It is an amenable number.

528216369 is a deficient number, since it is larger than the sum of its proper divisors (176072127).

528216369 is a wasteful number, since it uses less digits than its factorization.

528216369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176072126.

The product of its digits is 155520, while the sum is 42.

The square root of 528216369 is about 22982.9582299581. The cubic root of 528216369 is about 808.3583929690.

The spelling of 528216369 in words is "five hundred twenty-eight million, two hundred sixteen thousand, three hundred sixty-nine".