520047400 has 48 divisors (see below), whose sum is σ = 1212645600. Its totient is φ = 207410880.

The previous prime is 520047389. The next prime is 520047421. The reversal of 520047400 is 4740025.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68179 + ... + 75421.

It is an arithmetic number, because the mean of its divisors is an integer number (25263450).

Almost surely, 2^520047400 is an apocalyptic number.

520047400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520047400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (606322800).

520047400 is an abundant number, since it is smaller than the sum of its proper divisors (692598200).

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

520047400 is a wasteful number, since it uses less digits than its factorization.

520047400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7618 (or 7609 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 520047400 is about 22804.5477920524. The cubic root of 520047400 is about 804.1695846166.

Adding to 520047400 its reverse (4740025), we get a palindrome (524787425).

The spelling of 520047400 in words is "five hundred twenty million, forty-seven thousand, four hundred".