512730020 has 24 divisors (see below), whose sum is σ = 1174618368. Its totient is φ = 186447200.

The previous prime is 512730019. The next prime is 512730037. The reversal of 512730020 is 20037215.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 512729974 and 512730001.

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, 1165076 + ... + 1165515.

It is an arithmetic number, because the mean of its divisors is an integer number (48942432).

Almost surely, 2^512730020 is an apocalyptic number.

It is an amenable number.

512730020 is an abundant number, since it is smaller than the sum of its proper divisors (661888348).

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

512730020 is a wasteful number, since it uses less digits than its factorization.

512730020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330611 (or 2330609 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 512730020 is about 22643.5425673634. The cubic root of 512730020 is about 800.3800381851.

Adding to 512730020 its reverse (20037215), we get a palindrome (532767235).

The spelling of 512730020 in words is "five hundred twelve million, seven hundred thirty thousand, twenty".