320449896 has 192 divisors, whose sum is σ = 1012502400. Its totient is φ = 90699264.

The previous prime is 320449867. The next prime is 320449903. The reversal of 320449896 is 698944023.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 657765 + ... + 658251.

It is an arithmetic number, because the mean of its divisors is an integer number (5273450).

Almost surely, 2^320449896 is an apocalyptic number.

320449896 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320449896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506251200).

320449896 is an abundant number, since it is smaller than the sum of its proper divisors (692052504).

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

320449896 is a wasteful number, since it uses less digits than its factorization.

320449896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 320449896 is about 17901.1143787196. The cubic root of 320449896 is about 684.3107749576.

The spelling of 320449896 in words is "three hundred twenty million, four hundred forty-nine thousand, eight hundred ninety-six".