512220024 has 80 divisors (see below), whose sum is σ = 1438133400. Its totient is φ = 170330688.

The previous prime is 512220017. The next prime is 512220041. The reversal of 512220024 is 420022215.

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 = 512219979 and 512220006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 400474 + ... + 401750.

Almost surely, 2^512220024 is an apocalyptic number.

512220024 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 512220024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (719066700).

512220024 is an abundant number, since it is smaller than the sum of its proper divisors (925913376).

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

512220024 is a wasteful number, since it uses less digits than its factorization.

512220024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914 (or 1901 counting only the distinct ones).

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

The square root of 512220024 is about 22632.2783652022. The cubic root of 512220024 is about 800.1145794220.

Adding to 512220024 its reverse (420022215), we get a palindrome (932242239).

The spelling of 512220024 in words is "five hundred twelve million, two hundred twenty thousand, twenty-four".