505341440 has 80 divisors (see below), whose sum is σ = 1223426160. Its totient is φ = 200171520.

The previous prime is 505341427. The next prime is 505341451. The reversal of 505341440 is 44143505.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278135 + ... + 279945.

It is an arithmetic number, because the mean of its divisors is an integer number (15292827).

Almost surely, 2^505341440 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 505341440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (611713080).

505341440 is an abundant number, since it is smaller than the sum of its proper divisors (718084720).

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

505341440 is a wasteful number, since it uses less digits than its factorization.

505341440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943 (or 1927 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 505341440 is about 22479.8007108604. The cubic root of 505341440 is about 796.5168566501.

Adding to 505341440 its reverse (44143505), we get a palindrome (549484945).

The spelling of 505341440 in words is "five hundred five million, three hundred forty-one thousand, four hundred forty".