920775728 has 10 divisors (see below), whose sum is σ = 1784003004. Its totient is φ = 460387856.

The previous prime is 920775703. The next prime is 920775749. The reversal of 920775728 is 827577029.

920775728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28774226 + ... + 28774257.

Almost surely, 2^920775728 is an apocalyptic number.

It is an amenable number.

920775728 is a deficient number, since it is larger than the sum of its proper divisors (863227276).

920775728 is a wasteful number, since it uses less digits than its factorization.

920775728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57548491 (or 57548485 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 920775728 is about 30344.2865791898. The cubic root of 920775728 is about 972.8621060862.

The spelling of 920775728 in words is "nine hundred twenty million, seven hundred seventy-five thousand, seven hundred twenty-eight".