320973380 has 96 divisors (see below), whose sum is σ = 856504320. Its totient is φ = 98288640.

The previous prime is 320973377. The next prime is 320973391. The reversal of 320973380 is 83379023.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 320973380.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53576 + ... + 59264.

It is an arithmetic number, because the mean of its divisors is an integer number (8921920).

Almost surely, 2^320973380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320973380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428252160).

320973380 is an abundant number, since it is smaller than the sum of its proper divisors (535530940).

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

320973380 is a wasteful number, since it uses less digits than its factorization.

320973380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5749 (or 5747 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 320973380 is about 17915.7299600100. The cubic root of 320973380 is about 684.6832001617.

The spelling of 320973380 in words is "three hundred twenty million, nine hundred seventy-three thousand, three hundred eighty".