528720813 has 24 divisors (see below), whose sum is σ = 782615808. Its totient is φ = 343805472.

The previous prime is 528720811. The next prime is 528720817. The reversal of 528720813 is 318027825.

It is not a de Polignac number, because 528720813 - 2¹ = 528720811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528720811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132120 + ... + 136062.

It is an arithmetic number, because the mean of its divisors is an integer number (32608992).

Almost surely, 2^528720813 is an apocalyptic number.

It is an amenable number.

528720813 is a deficient number, since it is larger than the sum of its proper divisors (253894995).

528720813 is a wasteful number, since it uses less digits than its factorization.

528720813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4313 (or 4310 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 528720813 is about 22993.9299163932. The cubic root of 528720813 is about 808.6156371764.

The spelling of 528720813 in words is "five hundred twenty-eight million, seven hundred twenty thousand, eight hundred thirteen".