512012440 has 16 divisors (see below), whose sum is σ = 1152028080. Its totient is φ = 204804960.

The previous prime is 512012381. The next prime is 512012471. The reversal of 512012440 is 44210215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6400116 + ... + 6400195.

It is an arithmetic number, because the mean of its divisors is an integer number (72001755).

Almost surely, 2^512012440 is an apocalyptic number.

It is an amenable number.

512012440 is an abundant number, since it is smaller than the sum of its proper divisors (640015640).

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

512012440 is a wasteful number, since it uses less digits than its factorization.

512012440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12800322 (or 12800318 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 512012440 is about 22627.6918840610. The cubic root of 512012440 is about 800.0064791142.

Adding to 512012440 its reverse (44210215), we get a palindrome (556222655).

The spelling of 512012440 in words is "five hundred twelve million, twelve thousand, four hundred forty".