320768228730 has 32 divisors (see below), whose sum is σ = 771629960448. Its totient is φ = 85339726400.

The previous prime is 320768228717. The next prime is 320768228731. The reversal of 320768228730 is 37822867023.

It is a self number, because there is not a number n which added to its sum of digits gives 320768228730.

It is not an unprimeable number, because it can be changed into a prime (320768228731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12391101 + ... + 12416960.

It is an arithmetic number, because the mean of its divisors is an integer number (24113436264).

Almost surely, 2^320768228730 is an apocalyptic number.

320768228730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

320768228730 is an abundant number, since it is smaller than the sum of its proper divisors (450861731718).

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

320768228730 is a wasteful number, since it uses less digits than its factorization.

320768228730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24808502.

The product of its (nonzero) digits is 1354752, while the sum is 48.

The spelling of 320768228730 in words is "three hundred twenty billion, seven hundred sixty-eight million, two hundred twenty-eight thousand, seven hundred thirty".