512085478 has 16 divisors (see below), whose sum is σ = 802238976. Its totient is φ = 244692360.

The previous prime is 512085467. The next prime is 512085481. The reversal of 512085478 is 874580215.

It is a self number, because there is not a number n which added to its sum of digits gives 512085478.

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 7 ways as a sum of consecutive naturals, for example, 55075 + ... + 63697.

It is an arithmetic number, because the mean of its divisors is an integer number (50139936).

Almost surely, 2^512085478 is an apocalyptic number.

512085478 is a deficient number, since it is larger than the sum of its proper divisors (290153498).

512085478 is a wasteful number, since it uses less digits than its factorization.

512085478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9939.

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 512085478 is about 22629.3057339371. The cubic root of 512085478 is about 800.0445173144.

The spelling of 512085478 in words is "five hundred twelve million, eighty-five thousand, four hundred seventy-eight".