520147264 has 224 divisors, whose sum is σ = 1361862656. Its totient is φ = 191600640.

The previous prime is 520147253. The next prime is 520147291. The reversal of 520147264 is 462741025.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7763359 + ... + 7763425.

It is an arithmetic number, because the mean of its divisors is an integer number (6079744).

Almost surely, 2^520147264 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 520147264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (680931328).

520147264 is an abundant number, since it is smaller than the sum of its proper divisors (841715392).

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

520147264 is a wasteful number, since it uses less digits than its factorization.

520147264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 520147264 is about 22806.7372502074. The cubic root of 520147264 is about 804.2210558552.

Adding to 520147264 its reverse (462741025), we get a palindrome (982888289).

The spelling of 520147264 in words is "five hundred twenty million, one hundred forty-seven thousand, two hundred sixty-four".