520634268 has 144 divisors (see below), whose sum is σ = 1668226560. Its totient is φ = 132969600.

The previous prime is 520634263. The next prime is 520634269. The reversal of 520634268 is 862436025.

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 (520634263) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 167553 + ... + 170631.

Almost surely, 2^520634268 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 520634268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (834113280).

520634268 is an abundant number, since it is smaller than the sum of its proper divisors (1147592292).

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

520634268 is a wasteful number, since it uses less digits than its factorization.

520634268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3168 (or 3163 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 520634268 is about 22817.4115096345. The cubic root of 520634268 is about 804.4719698607.

The spelling of 520634268 in words is "five hundred twenty million, six hundred thirty-four thousand, two hundred sixty-eight".