830305778 has 16 divisors (see below), whose sum is σ = 1255397400. Its totient is φ = 411847296.

The previous prime is 830305739. The next prime is 830305781. The reversal of 830305778 is 877503038.

It can be written as a sum of positive squares in 4 ways, for example, as 307406089 + 522899689 = 17533^2 + 22867^2 .

It is an unprimeable number.

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, 360326 + ... + 362622.

Almost surely, 2^830305778 is an apocalyptic number.

830305778 is a deficient number, since it is larger than the sum of its proper divisors (425091622).

830305778 is a wasteful number, since it uses less digits than its factorization.

830305778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3661.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 830305778 is about 28815.0269477577. The cubic root of 830305778 is about 939.8950305299.

The spelling of 830305778 in words is "eight hundred thirty million, three hundred five thousand, seven hundred seventy-eight".