320397336 has 128 divisors (see below), whose sum is σ = 1052352000. Its totient is φ = 88373376.

The previous prime is 320397299. The next prime is 320397353. The reversal of 320397336 is 633793023.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 320397336.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40195 + ... + 47501.

It is an arithmetic number, because the mean of its divisors is an integer number (8221500).

Almost surely, 2^320397336 is an apocalyptic number.

320397336 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 320397336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (526176000).

320397336 is an abundant number, since it is smaller than the sum of its proper divisors (731954664).

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

320397336 is a wasteful number, since it uses less digits than its factorization.

320397336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7358 (or 7348 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 36.

The square root of 320397336 is about 17899.6462534878. The cubic root of 320397336 is about 684.2733594974.

The spelling of 320397336 in words is "three hundred twenty million, three hundred ninety-seven thousand, three hundred thirty-six".