520650000 has 360 divisors, whose sum is σ = 1983388680. Its totient is φ = 126720000.

The previous prime is 520649999. The next prime is 520650023. The reversal of 520650000 is 56025.

It can be written as a sum of positive squares in 12 ways, for example, as 468116496 + 52533504 = 21636^2 + 7248^2 .

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5849956 + ... + 5850044.

It is an arithmetic number, because the mean of its divisors is an integer number (5509413).

Almost surely, 2^520650000 is an apocalyptic number.

520650000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520650000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (991694340).

520650000 is an abundant number, since it is smaller than the sum of its proper divisors (1462738680).

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

520650000 is a wasteful number, since it uses less digits than its factorization.

520650000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 520650000 is about 22817.7562437677. The cubic root of 520650000 is about 804.4800726860.

The spelling of 520650000 in words is "five hundred twenty million, six hundred fifty thousand".