1000320 has 64 divisors (see below), whose sum is σ = 3194640. Its totient is φ = 266240.

The previous prime is 1000313. The next prime is 1000333. The reversal of 1000320 is 230001.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 1000299 and 1000308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1660 + ... + 2180.

2^1000320 is an apocalyptic number.

1000320 is a gapful number since it is divisible by the number (10) 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 1000320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1597320).

1000320 is an abundant number, since it is smaller than the sum of its proper divisors (2194320).

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

1000320 is an equidigital number, since it uses as much as digits as its factorization.

1000320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 6.

The square root of 1000320 is about 1000.1599872020. The cubic root of 1000320 is about 100.0106655291.

Adding to 1000320 its reverse (230001), we get a palindrome (1230321).

The spelling of 1000320 in words is "one million, three hundred twenty", and thus it is an aban number.