516403878 has 8 divisors (see below), whose sum is σ = 1032807768. Its totient is φ = 172134624.

The previous prime is 516403871. The next prime is 516403891. The reversal of 516403878 is 878304615.

It is a sphenic number, since it is the product of 3 distinct primes.

516403878 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516403871) 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, 43033651 + ... + 43033662.

It is an arithmetic number, because the mean of its divisors is an integer number (129100971).

Almost surely, 2^516403878 is an apocalyptic number.

516403878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

516403878 is a wasteful number, since it uses less digits than its factorization.

516403878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86067318.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 516403878 is about 22724.5215131144. The cubic root of 516403878 is about 802.2871414570.

The spelling of 516403878 in words is "five hundred sixteen million, four hundred three thousand, eight hundred seventy-eight".