505024240 has 80 divisors (see below), whose sum is σ = 1355359680. Its totient is φ = 171417600.

The previous prime is 505024229. The next prime is 505024249. The reversal of 505024240 is 42420505.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505024249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52096 + ... + 61024.

It is an arithmetic number, because the mean of its divisors is an integer number (16941996).

Almost surely, 2^505024240 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 505024240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (677679840).

505024240 is an abundant number, since it is smaller than the sum of its proper divisors (850335440).

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

505024240 is a wasteful number, since it uses less digits than its factorization.

505024240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9050 (or 9044 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 505024240 is about 22472.7443806937. The cubic root of 505024240 is about 796.3501653739.

Adding to 505024240 its reverse (42420505), we get a palindrome (547444745).

The spelling of 505024240 in words is "five hundred five million, twenty-four thousand, two hundred forty".