512500440 has 32 divisors (see below), whose sum is σ = 1537501680. Its totient is φ = 136666752.

The previous prime is 512500409. The next prime is 512500447. The reversal of 512500440 is 44005215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512500447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2135299 + ... + 2135538.

Almost surely, 2^512500440 is an apocalyptic number.

It is an amenable number.

512500440 is an abundant number, since it is smaller than the sum of its proper divisors (1025001240).

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

512500440 is a wasteful number, since it uses less digits than its factorization.

512500440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270851 (or 4270847 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 512500440 is about 22638.4725633158. The cubic root of 512500440 is about 800.2605609591.

Adding to 512500440 its reverse (44005215), we get a palindrome (556505655).

The spelling of 512500440 in words is "five hundred twelve million, five hundred thousand, four hundred forty".