528312805 has 8 divisors (see below), whose sum is σ = 636015744. Its totient is φ = 421290000.

The previous prime is 528312787. The next prime is 528312809. The reversal of 528312805 is 508213825.

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

It is not a de Polignac number, because 528312805 - 2⁵ = 528312773 is a prime.

It is a super-2 number, since 2×528312805² = 558228839853936050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528312809) 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, 168321 + ... + 171430.

It is an arithmetic number, because the mean of its divisors is an integer number (79501968).

Almost surely, 2^528312805 is an apocalyptic number.

It is an amenable number.

528312805 is a deficient number, since it is larger than the sum of its proper divisors (107702939).

528312805 is a wasteful number, since it uses less digits than its factorization.

528312805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340067.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 528312805 is about 22985.0561234903. The cubic root of 528312805 is about 808.4075837369.

The spelling of 528312805 in words is "five hundred twenty-eight million, three hundred twelve thousand, eight hundred five".