768731930 has 16 divisors (see below), whose sum is σ = 1384606440. Its totient is φ = 307295232.

The previous prime is 768731923. The next prime is 768731947. The reversal of 768731930 is 39137867.

It can be written as a sum of positive squares in 4 ways, for example, as 766791481 + 1940449 = 27691^2 + 1393^2 .

It is a Curzon 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, 7799 + ... + 39978.

Almost surely, 2^768731930 is an apocalyptic number.

768731930 is a deficient number, since it is larger than the sum of its proper divisors (615874510).

768731930 is a wasteful number, since it uses less digits than its factorization.

768731930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49393.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 768731930 is about 27726.0154007026. The cubic root of 768731930 is about 916.0622220530.

The spelling of 768731930 in words is "seven hundred sixty-eight million, seven hundred thirty-one thousand, nine hundred thirty".