320406344 has 64 divisors (see below), whose sum is σ = 656942400. Its totient is φ = 145926144.

The previous prime is 320406337. The next prime is 320406371. The reversal of 320406344 is 443604023.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 585479 + ... + 586025.

It is an arithmetic number, because the mean of its divisors is an integer number (10264725).

Almost surely, 2^320406344 is an apocalyptic number.

320406344 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

320406344 is an abundant number, since it is smaller than the sum of its proper divisors (336536056).

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

320406344 is a wasteful number, since it uses less digits than its factorization.

320406344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 320406344 is about 17899.8978768037. The cubic root of 320406344 is about 684.2797722397.

The spelling of 320406344 in words is "three hundred twenty million, four hundred six thousand, three hundred forty-four".