501038864 has 40 divisors (see below), whose sum is σ = 1017101568. Its totient is φ = 238803840.

The previous prime is 501038849. The next prime is 501038869. The reversal of 501038864 is 468830105.

It is not an unprimeable number, because it can be changed into a prime (501038869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25694 + ... + 40770.

Almost surely, 2^501038864 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 501038864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508550784).

501038864 is an abundant number, since it is smaller than the sum of its proper divisors (516062704).

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

501038864 is a wasteful number, since it uses less digits than its factorization.

501038864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15183 (or 15177 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 501038864 is about 22383.8974264984. The cubic root of 501038864 is about 794.2498436508.

Adding to 501038864 its reverse (468830105), we get a palindrome (969868969).

The spelling of 501038864 in words is "five hundred one million, thirty-eight thousand, eight hundred sixty-four".