503040644 has 24 divisors (see below), whose sum is σ = 903130368. Its totient is φ = 245021760.

The previous prime is 503040619. The next prime is 503040647. The reversal of 503040644 is 446040305.

It is not an unprimeable number, because it can be changed into a prime (503040647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133109 + ... + 136835.

It is an arithmetic number, because the mean of its divisors is an integer number (37630432).

Almost surely, 2^503040644 is an apocalyptic number.

It is an amenable number.

503040644 is a deficient number, since it is larger than the sum of its proper divisors (400089724).

503040644 is a wasteful number, since it uses less digits than its factorization.

503040644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4595 (or 4593 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 503040644 is about 22428.5675868969. The cubic root of 503040644 is about 795.3061827104.

Adding to 503040644 its reverse (446040305), we get a palindrome (949080949).

The spelling of 503040644 in words is "five hundred three million, forty thousand, six hundred forty-four".