503453840 has 20 divisors (see below), whose sum is σ = 1170530364. Its totient is φ = 201381504.

The previous prime is 503453813. The next prime is 503453843. The reversal of 503453840 is 48354305.

It can be written as a sum of positive squares in 2 ways, for example, as 62789776 + 440664064 = 7924^2 + 20992^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 503453797 and 503453806.

It is not an unprimeable number, because it can be changed into a prime (503453843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3146507 + ... + 3146666.

Almost surely, 2^503453840 is an apocalyptic number.

It is an amenable number.

503453840 is an abundant number, since it is smaller than the sum of its proper divisors (667076524).

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

503453840 is a wasteful number, since it uses less digits than its factorization.

503453840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6293186 (or 6293180 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 503453840 is about 22437.7770734982. Note that the first 3 decimals coincide. The cubic root of 503453840 is about 795.5238771143.

The spelling of 503453840 in words is "five hundred three million, four hundred fifty-three thousand, eight hundred forty".