320745044 has 6 divisors (see below), whose sum is σ = 561303834. Its totient is φ = 160372520.

The previous prime is 320745037. The next prime is 320745059. The reversal of 320745044 is 440547023.

It can be written as a sum of positive squares in only one way, i.e., 310182544 + 10562500 = 17612^2 + 3250^2 .

It is a junction number, because it is equal to n+sod(n) for n = 320744998 and 320745016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40093127 + ... + 40093134.

It is an arithmetic number, because the mean of its divisors is an integer number (93550639).

Almost surely, 2^320745044 is an apocalyptic number.

It is an amenable number.

320745044 is a deficient number, since it is larger than the sum of its proper divisors (240558790).

320745044 is a wasteful number, since it uses less digits than its factorization.

320745044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80186265 (or 80186263 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 320745044 is about 17909.3563256751. The cubic root of 320745044 is about 684.5208036103.

The spelling of 320745044 in words is "three hundred twenty million, seven hundred forty-five thousand, forty-four".