1383280 has 20 divisors (see below), whose sum is σ = 3216312. Its totient is φ = 553280.

The previous prime is 1383209. The next prime is 1383287. The reversal of 1383280 is 823831.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383287) 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, 8566 + ... + 8725.

2^1383280 is an apocalyptic number.

1383280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1383280 is an abundant number, since it is smaller than the sum of its proper divisors (1833032).

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

1383280 is a wasteful number, since it uses less digits than its factorization.

1383280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17304 (or 17298 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1383280 is about 1176.1292445986. The cubic root of 1383280 is about 111.4217647137.

The spelling of 1383280 in words is "one million, three hundred eighty-three thousand, two hundred eighty".