512240220 has 48 divisors (see below), whose sum is σ = 1593637920. Its totient is φ = 136597248.

The previous prime is 512240203. The next prime is 512240233. The reversal of 512240220 is 22042215.

It is a super-3 number, since 3×512240220³ (a number of 27 digits) contains 333 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 512240193 and 512240202.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 473757 + ... + 474836.

It is an arithmetic number, because the mean of its divisors is an integer number (33200790).

Almost surely, 2^512240220 is an apocalyptic number.

It is an amenable number.

512240220 is an abundant number, since it is smaller than the sum of its proper divisors (1081397700).

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

512240220 is a wasteful number, since it uses less digits than its factorization.

512240220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948611 (or 948603 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 512240220 is about 22632.7245377131. The cubic root of 512240220 is about 800.1250950214.

Adding to 512240220 its reverse (22042215), we get a palindrome (534282435).

The spelling of 512240220 in words is "five hundred twelve million, two hundred forty thousand, two hundred twenty".