502721340 has 96 divisors (see below), whose sum is σ = 1545336576. Its totient is φ = 121098240.

The previous prime is 502721311. The next prime is 502721341. The reversal of 502721340 is 43127205.

It is a self number, because there is not a number n which added to its sum of digits gives 502721340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (502721341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105244 + ... + 109916.

It is an arithmetic number, because the mean of its divisors is an integer number (16097256).

Almost surely, 2^502721340 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 502721340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (772668288).

502721340 is an abundant number, since it is smaller than the sum of its proper divisors (1042615236).

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

502721340 is a wasteful number, since it uses less digits than its factorization.

502721340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4859 (or 4857 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 502721340 is about 22421.4482137082. The cubic root of 502721340 is about 795.1378741138.

Adding to 502721340 its reverse (43127205), we get a palindrome (545848545).

The spelling of 502721340 in words is "five hundred two million, seven hundred twenty-one thousand, three hundred forty".