520353240 has 96 divisors (see below), whose sum is σ = 1715923440. Its totient is φ = 126142720.

The previous prime is 520353233. The next prime is 520353257. The reversal of 520353240 is 42353025.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 520353240.

It is a congruent number.

It is an unprimeable number.

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, 3399 + ... + 32438.

Almost surely, 2^520353240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520353240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (857961720).

520353240 is an abundant number, since it is smaller than the sum of its proper divisors (1195570200).

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

520353240 is a wasteful number, since it uses less digits than its factorization.

520353240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35873 (or 35858 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 520353240 is about 22811.2524864375. The cubic root of 520353240 is about 804.3271978314.

The spelling of 520353240 in words is "five hundred twenty million, three hundred fifty-three thousand, two hundred forty".