520224408 has 192 divisors, whose sum is σ = 1635379200. Its totient is φ = 147744000.

The previous prime is 520224391. The next prime is 520224413. The reversal of 520224408 is 804422025.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2723593 + ... + 2723783.

It is an arithmetic number, because the mean of its divisors is an integer number (8517600).

Almost surely, 2^520224408 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 520224408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (817689600).

520224408 is an abundant number, since it is smaller than the sum of its proper divisors (1115154792).

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

520224408 is a wasteful number, since it uses less digits than its factorization.

520224408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 520224408 is about 22808.4284421352. The cubic root of 520224408 is about 804.2608123925.

The spelling of 520224408 in words is "five hundred twenty million, two hundred twenty-four thousand, four hundred eight".