505197840 has 480 divisors, whose sum is σ = 2040940800. Its totient is φ = 102961152.

The previous prime is 505197827. The next prime is 505197851. The reversal of 505197840 is 48791505.

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 95 ways as a sum of consecutive naturals, for example, 26589351 + ... + 26589369.

It is an arithmetic number, because the mean of its divisors is an integer number (4251960).

Almost surely, 2^505197840 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 505197840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1020470400).

505197840 is an abundant number, since it is smaller than the sum of its proper divisors (1535742960).

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

505197840 is a wasteful number, since it uses less digits than its factorization.

505197840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 505197840 is about 22476.6065054314. The cubic root of 505197840 is about 796.4414022824.

The spelling of 505197840 in words is "five hundred five million, one hundred ninety-seven thousand, eight hundred forty".