511678840 has 32 divisors (see below), whose sum is σ = 1152030960. Its totient is φ = 204537600.

The previous prime is 511678837. The next prime is 511678841. The reversal of 511678840 is 48876115.

511678840 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 511678793 and 511678802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511678841) 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 7 ways as a sum of consecutive naturals, for example, 77260 + ... + 83620.

Almost surely, 2^511678840 is an apocalyptic number.

It is an amenable number.

511678840 is an abundant number, since it is smaller than the sum of its proper divisors (640352120).

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

511678840 is a wasteful number, since it uses less digits than its factorization.

511678840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8383 (or 8379 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 511678840 is about 22620.3191843086. The cubic root of 511678840 is about 799.8326941801.

The spelling of 511678840 in words is "five hundred eleven million, six hundred seventy-eight thousand, eight hundred forty".