526812820 has 24 divisors (see below), whose sum is σ = 1117716264. Its totient is φ = 208551936.

The previous prime is 526812817. The next prime is 526812827. The reversal of 526812820 is 28218625.

It can be written as a sum of positive squares in 4 ways, for example, as 121837444 + 404975376 = 11038^2 + 20124^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (526812827) 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, 133837 + ... + 137716.

It is an arithmetic number, because the mean of its divisors is an integer number (46571511).

Almost surely, 2^526812820 is an apocalyptic number.

It is an amenable number.

526812820 is an abundant number, since it is smaller than the sum of its proper divisors (590903444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

526812820 is a wasteful number, since it uses less digits than its factorization.

526812820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271659 (or 271657 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 526812820 is about 22952.4033599970. The cubic root of 526812820 is about 807.6417819525.

The spelling of 526812820 in words is "five hundred twenty-six million, eight hundred twelve thousand, eight hundred twenty".