1003320 has 64 divisors (see below), whose sum is σ = 3348000. Its totient is φ = 267264.

The previous prime is 1003307. The next prime is 1003337. The reversal of 1003320 is 233001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

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, 616 + ... + 1544.

2^1003320 is an apocalyptic number.

1003320 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 1003320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1674000).

1003320 is an abundant number, since it is smaller than the sum of its proper divisors (2344680).

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

1003320 is a wasteful number, since it uses less digits than its factorization.

1003320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 1003320 is about 1001.6586244824. The cubic root of 1003320 is about 100.1105444209.

Adding to 1003320 its reverse (233001), we get a palindrome (1236321).

The spelling of 1003320 in words is "one million, three thousand, three hundred twenty".