1383320 has 16 divisors (see below), whose sum is σ = 3112560. Its totient is φ = 553312.

The previous prime is 1383301. The next prime is 1383323. The reversal of 1383320 is 233831.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1383292 and 1383301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383323) 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, 17252 + ... + 17331.

It is an arithmetic number, because the mean of its divisors is an integer number (194535).

2^1383320 is an apocalyptic number.

1383320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1383320 is an abundant number, since it is smaller than the sum of its proper divisors (1729240).

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

1383320 is a wasteful number, since it uses less digits than its factorization.

1383320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34594 (or 34590 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1383320 is about 1176.1462494095. The cubic root of 1383320 is about 111.4228386894.

The spelling of 1383320 in words is "one million, three hundred eighty-three thousand, three hundred twenty".