501534840 has 32 divisors (see below), whose sum is σ = 1504604880. Its totient is φ = 133742592.

The previous prime is 501534809. The next prime is 501534851. The reversal of 501534840 is 48435105.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 501534798 and 501534807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2089609 + ... + 2089848.

Almost surely, 2^501534840 is an apocalyptic number.

It is an amenable number.

501534840 is an abundant number, since it is smaller than the sum of its proper divisors (1003070040).

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

501534840 is a wasteful number, since it uses less digits than its factorization.

501534840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4179471 (or 4179467 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 501534840 is about 22394.9735431860. The cubic root of 501534840 is about 794.5118319432.

Adding to 501534840 its reverse (48435105), we get a palindrome (549969945).

The spelling of 501534840 in words is "five hundred one million, five hundred thirty-four thousand, eight hundred forty".