505107020 has 96 divisors (see below), whose sum is σ = 1227744000. Its totient is φ = 172627200.

The previous prime is 505107011. The next prime is 505107047. The reversal of 505107020 is 20701505.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 505106983 and 505107001.

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, 622415 + ... + 623225.

It is an arithmetic number, because the mean of its divisors is an integer number (12789000).

Almost surely, 2^505107020 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 505107020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (613872000).

505107020 is an abundant number, since it is smaller than the sum of its proper divisors (722636980).

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

505107020 is a wasteful number, since it uses less digits than its factorization.

505107020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999 (or 997 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 505107020 is about 22474.5860918505. The cubic root of 505107020 is about 796.3936736915.

Adding to 505107020 its reverse (20701505), we get a palindrome (525808525).

The spelling of 505107020 in words is "five hundred five million, one hundred seven thousand, twenty".