511340020 has 48 divisors (see below), whose sum is σ = 1096260480. Its totient is φ = 200288384.

The previous prime is 511339993. The next prime is 511340021. The reversal of 511340020 is 20043115.

It is a super-2 number, since 2×511340020² = 522937232107200800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 511339976 and 511340003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511340021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373377 + ... + 374743.

It is an arithmetic number, because the mean of its divisors is an integer number (22838760).

Almost surely, 2^511340020 is an apocalyptic number.

It is an amenable number.

511340020 is an abundant number, since it is smaller than the sum of its proper divisors (584920460).

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

511340020 is a wasteful number, since it uses less digits than its factorization.

511340020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752 (or 1750 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 511340020 is about 22612.8286598559. The cubic root of 511340020 is about 799.6561126147.

Adding to 511340020 its reverse (20043115), we get a palindrome (531383135).

The spelling of 511340020 in words is "five hundred eleven million, three hundred forty thousand, twenty".