511540428 has 24 divisors (see below), whose sum is σ = 1364108032. Its totient is φ = 146154384.

The previous prime is 511540411. The next prime is 511540441. The reversal of 511540428 is 824045115.

It is a junction number, because it is equal to n+sod(n) for n = 511540395 and 511540404.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3044800 + ... + 3044967.

Almost surely, 2^511540428 is an apocalyptic number.

It is an amenable number.

511540428 is an abundant number, since it is smaller than the sum of its proper divisors (852567604).

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

511540428 is a wasteful number, since it uses less digits than its factorization.

511540428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6089781 (or 6089779 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 511540428 is about 22617.2595156885. The cubic root of 511540428 is about 799.7605679308.

The spelling of 511540428 in words is "five hundred eleven million, five hundred forty thousand, four hundred twenty-eight".