520424000 has 56 divisors (see below), whose sum is σ = 1288849848. Its totient is φ = 208166400.

The previous prime is 520423973. The next prime is 520424011. The reversal of 520424000 is 424025.

It can be written as a sum of positive squares in 4 ways, for example, as 123298816 + 397125184 = 11104^2 + 19928^2 .

It is a super-2 number, since 2×520424000² = 541682279552000000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 520424000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24527 + ... + 40526.

Almost surely, 2^520424000 is an apocalyptic number.

520424000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

520424000 is an abundant number, since it is smaller than the sum of its proper divisors (768425848).

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

520424000 is an equidigital number, since it uses as much as digits as its factorization.

520424000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65080 (or 65060 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 520424000 is about 22812.8034226397. The cubic root of 520424000 is about 804.3636548689.

Adding to 520424000 its reverse (424025), we get a palindrome (520848025).

The spelling of 520424000 in words is "five hundred twenty million, four hundred twenty-four thousand".