828003305 has 4 divisors (see below), whose sum is σ = 993603972. Its totient is φ = 662402640.

The previous prime is 828003287. The next prime is 828003367. The reversal of 828003305 is 503300828.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 225840784 + 602162521 = 15028^2 + 24539^2 .

It is a de Polignac number, because none of the positive numbers 2^k-828003305 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82800326 + ... + 82800335.

It is an arithmetic number, because the mean of its divisors is an integer number (248400993).

Almost surely, 2^828003305 is an apocalyptic number.

It is an amenable number.

828003305 is a deficient number, since it is larger than the sum of its proper divisors (165600667).

828003305 is a wasteful number, since it uses less digits than its factorization.

828003305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165600666.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 828003305 is about 28775.0465681639. The cubic root of 828003305 is about 939.0254366847.

The spelling of 828003305 in words is "eight hundred twenty-eight million, three thousand, three hundred five".