512285778 has 12 divisors (see below), whose sum is σ = 1109952558. Its totient is φ = 170761920.

The previous prime is 512285773. The next prime is 512285779. The reversal of 512285778 is 877582215.

512285778 is a `hidden beast` number, since 51 + 2 + 28 + 577 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 507736089 + 4549689 = 22533^2 + 2133^2 .

It is not an unprimeable number, because it can be changed into a prime (512285773) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14230143 + ... + 14230178.

Almost surely, 2^512285778 is an apocalyptic number.

512285778 is an abundant number, since it is smaller than the sum of its proper divisors (597666780).

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

512285778 is a wasteful number, since it uses less digits than its factorization.

512285778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28460329 (or 28460326 counting only the distinct ones).

The product of its digits is 313600, while the sum is 45.

The square root of 512285778 is about 22633.7309783429. The cubic root of 512285778 is about 800.1488150242.

The spelling of 512285778 in words is "five hundred twelve million, two hundred eighty-five thousand, seven hundred seventy-eight".