320918406 has 16 divisors (see below), whose sum is σ = 642028800. Its totient is φ = 106940808.

The previous prime is 320918393. The next prime is 320918407. The reversal of 320918406 is 604819023.

320918406 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320918407) 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, 22935 + ... + 34173.

It is an arithmetic number, because the mean of its divisors is an integer number (40126800).

Almost surely, 2^320918406 is an apocalyptic number.

320918406 is an abundant number, since it is smaller than the sum of its proper divisors (321110394).

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

320918406 is a wasteful number, since it uses less digits than its factorization.

320918406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16003.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 320918406 is about 17914.1956559595. The cubic root of 320918406 is about 684.6441087337.

The spelling of 320918406 in words is "three hundred twenty million, nine hundred eighteen thousand, four hundred six".