320447073 has 8 divisors (see below), whose sum is σ = 427366368. Its totient is φ = 213579584.

The previous prime is 320447041. The next prime is 320447087. The reversal of 320447073 is 370744023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320447073 - 2⁵ = 320447041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320447073.

It is not an unprimeable number, because it can be changed into a prime (320447033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5065 + ... + 25817.

It is an arithmetic number, because the mean of its divisors is an integer number (53420796).

Almost surely, 2^320447073 is an apocalyptic number.

It is an amenable number.

320447073 is a deficient number, since it is larger than the sum of its proper divisors (106919295).

320447073 is a wasteful number, since it uses less digits than its factorization.

320447073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25903.

The product of its (nonzero) digits is 14112, while the sum is 30.

The square root of 320447073 is about 17901.0355287062. The cubic root of 320447073 is about 684.3087654755.

The spelling of 320447073 in words is "three hundred twenty million, four hundred forty-seven thousand, seventy-three".