502640 has 40 divisors (see below), whose sum is σ = 1199328. Its totient is φ = 195840.

The previous prime is 502633. The next prime is 502643. The reversal of 502640 is 46205.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (502643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4829 + ... + 4931.

2⁵⁰²⁶⁴⁰ 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 502640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (599664).

502640 is an abundant number, since it is smaller than the sum of its proper divisors (696688).

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

502640 is a wasteful number, since it uses less digits than its factorization.

502640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 502640 is about 708.9710854471. The cubic root of 502640 is about 79.5094987530.

Adding to 502640 its reverse (46205), we get a palindrome (548845).

The spelling of 502640 in words is "five hundred two thousand, six hundred forty".