511540230 has 64 divisors (see below), whose sum is σ = 1305008640. Its totient is φ = 127961856.

The previous prime is 511540229. The next prime is 511540241. The reversal of 511540230 is 32045115.

It is a junction number, because it is equal to n+sod(n) for n = 511540197 and 511540206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54354 + ... + 63066.

It is an arithmetic number, because the mean of its divisors is an integer number (20390760).

Almost surely, 2^511540230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 511540230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652504320).

511540230 is an abundant number, since it is smaller than the sum of its proper divisors (793468410).

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

511540230 is a wasteful number, since it uses less digits than its factorization.

511540230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8845.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 511540230 is about 22617.2551384999. The cubic root of 511540230 is about 799.7604647441.

Adding to 511540230 its reverse (32045115), we get a palindrome (543585345).

The spelling of 511540230 in words is "five hundred eleven million, five hundred forty thousand, two hundred thirty".