512012020 has 24 divisors (see below), whose sum is σ = 1157935464. Its totient is φ = 189050496.

The previous prime is 512012009. The next prime is 512012047. The reversal of 512012020 is 20210215.

It can be written as a sum of positive squares in 4 ways, for example, as 9265936 + 502746084 = 3044^2 + 22422^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 984379 + ... + 984898.

It is an arithmetic number, because the mean of its divisors is an integer number (48247311).

Almost surely, 2^512012020 is an apocalyptic number.

It is an amenable number.

512012020 is an abundant number, since it is smaller than the sum of its proper divisors (645923444).

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

512012020 is a wasteful number, since it uses less digits than its factorization.

512012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969299 (or 1969297 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 512012020 is about 22627.6826033953. The cubic root of 512012020 is about 800.0062603677.

Adding to 512012020 its reverse (20210215), we get a palindrome (532222235).

The spelling of 512012020 in words is "five hundred twelve million, twelve thousand, twenty".