502740 has 144 divisors (see below), whose sum is σ = 1915200. Its totient is φ = 108864.

The previous prime is 502729. The next prime is 502769. The reversal of 502740 is 47205.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

502740 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26451 + ... + 26469.

It is an arithmetic number, because the mean of its divisors is an integer number (13300).

2⁵⁰²⁷⁴⁰ 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 502740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (957600).

502740 is an abundant number, since it is smaller than the sum of its proper divisors (1412460).

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

502740 is a wasteful number, since it uses less digits than its factorization.

502740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 502740 is about 709.0416066776. The cubic root of 502740 is about 79.5147711962.

Adding to 502740 its reverse (47205), we get a palindrome (549945).

Subtracting from 502740 its reverse (47205), we obtain a triangular number (455535 = T₉₅₄).

The spelling of 502740 in words is "five hundred two thousand, seven hundred forty".