511423028 has 12 divisors (see below), whose sum is σ = 919179492. Its totient is φ = 248800320.

The previous prime is 511423021. The next prime is 511423039. The reversal of 511423028 is 820324115.

It can be written as a sum of positive squares in 2 ways, for example, as 469068964 + 42354064 = 21658^2 + 6508^2 .

It is a junction number, because it is equal to n+sod(n) for n = 511422988 and 511423006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511423021) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1727633 + ... + 1727928.

It is an arithmetic number, because the mean of its divisors is an integer number (76598291).

Almost surely, 2^511423028 is an apocalyptic number.

It is an amenable number.

511423028 is a deficient number, since it is larger than the sum of its proper divisors (407756464).

511423028 is a wasteful number, since it uses less digits than its factorization.

511423028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3455602 (or 3455600 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 511423028 is about 22614.6640036946. The cubic root of 511423028 is about 799.6993807993.

The spelling of 511423028 in words is "five hundred eleven million, four hundred twenty-three thousand, twenty-eight".