320456216 has 8 divisors (see below), whose sum is σ = 600855420. Its totient is φ = 160228104.

The previous prime is 320456209. The next prime is 320456231. The reversal of 320456216 is 612654023.

It is a tau number, because it is divible by the number of its divisors (8).

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, 20028506 + ... + 20028521.

Almost surely, 2^320456216 is an apocalyptic number.

It is an amenable number.

320456216 is a deficient number, since it is larger than the sum of its proper divisors (280399204).

320456216 is a wasteful number, since it uses less digits than its factorization.

320456216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40057033 (or 40057029 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 320456216 is about 17901.2909031723. The cubic root of 320456216 is about 684.3152736490.

The spelling of 320456216 in words is "three hundred twenty million, four hundred fifty-six thousand, two hundred sixteen".