512013240 has 96 divisors (see below), whose sum is σ = 1686924720. Its totient is φ = 134659584.

The previous prime is 512013217. The next prime is 512013247. The reversal of 512013240 is 42310215.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512013247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16539 + ... + 36021.

Almost surely, 2^512013240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 512013240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (843462360).

512013240 is an abundant number, since it is smaller than the sum of its proper divisors (1174911480).

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

512013240 is a wasteful number, since it uses less digits than its factorization.

512013240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19573 (or 19566 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 512013240 is about 22627.7095615089. The cubic root of 512013240 is about 800.0068957739.

Adding to 512013240 its reverse (42310215), we get a palindrome (554323455).

The spelling of 512013240 in words is "five hundred twelve million, thirteen thousand, two hundred forty".