503345340 has 336 divisors, whose sum is σ = 1762790400. Its totient is φ = 120092544.

The previous prime is 503345329. The next prime is 503345347. The reversal of 503345340 is 43543305.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503345347) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 6371421 + ... + 6371499.

It is an arithmetic number, because the mean of its divisors is an integer number (5246400).

Almost surely, 2^503345340 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 503345340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (881395200).

503345340 is an abundant number, since it is smaller than the sum of its proper divisors (1259445060).

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

503345340 is a wasteful number, since it uses less digits than its factorization.

503345340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 27.

The square root of 503345340 is about 22435.3591457770. The cubic root of 503345340 is about 795.4667248757.

Adding to 503345340 its reverse (43543305), we get a palindrome (546888645).

The spelling of 503345340 in words is "five hundred three million, three hundred forty-five thousand, three hundred forty".