520817472 has 168 divisors, whose sum is σ = 1781373120. Its totient is φ = 148780800.

The previous prime is 520817459. The next prime is 520817477. The reversal of 520817472 is 274718025.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520817477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81597 + ... + 87747.

Almost surely, 2^520817472 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 520817472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (890686560).

520817472 is an abundant number, since it is smaller than the sum of its proper divisors (1260555648).

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

520817472 is a wasteful number, since it uses less digits than its factorization.

520817472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6186 (or 6163 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 520817472 is about 22821.4257223338. The cubic root of 520817472 is about 804.5663196490.

The spelling of 520817472 in words is "five hundred twenty million, eight hundred seventeen thousand, four hundred seventy-two".