1023320 has 16 divisors (see below), whose sum is σ = 2302560. Its totient is φ = 409312.

The previous prime is 1023317. The next prime is 1023329. The reversal of 1023320 is 233201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12752 + ... + 12831.

It is an arithmetic number, because the mean of its divisors is an integer number (143910).

2^1023320 is an apocalyptic number.

1023320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023320 is an abundant number, since it is smaller than the sum of its proper divisors (1279240).

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

1023320 is a wasteful number, since it uses less digits than its factorization.

1023320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25594 (or 25590 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 1023320 is about 1011.5928034540. The cubic root of 1023320 is about 100.7713679492.

Adding to 1023320 its reverse (233201), we get a palindrome (1256521).

The spelling of 1023320 in words is "one million, twenty-three thousand, three hundred twenty".