501015240 has 256 divisors, whose sum is σ = 1839801600. Its totient is φ = 120268800.

The previous prime is 501015239. The next prime is 501015257. The reversal of 501015240 is 42510105.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2150164 + ... + 2150396.

It is an arithmetic number, because the mean of its divisors is an integer number (7186725).

Almost surely, 2^501015240 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 501015240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (919900800).

501015240 is an abundant number, since it is smaller than the sum of its proper divisors (1338786360).

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

501015240 is a wasteful number, since it uses less digits than its factorization.

501015240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 501015240 is about 22383.3697195038. The cubic root of 501015240 is about 794.2373604853.

Adding to 501015240 its reverse (42510105), we get a palindrome (543525345).

The spelling of 501015240 in words is "five hundred one million, fifteen thousand, two hundred forty".