1383920 has 20 divisors (see below), whose sum is σ = 3217800. Its totient is φ = 553536.

The previous prime is 1383917. The next prime is 1383923. The reversal of 1383920 is 293831.

It is an interprime number because it is at equal distance from previous prime (1383917) and next prime (1383923).

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

It is a self number, because there is not a number n which added to its sum of digits gives 1383920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8570 + ... + 8729.

It is an arithmetic number, because the mean of its divisors is an integer number (160890).

2^1383920 is an apocalyptic number.

1383920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1383920 is an abundant number, since it is smaller than the sum of its proper divisors (1833880).

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

1383920 is a wasteful number, since it uses less digits than its factorization.

1383920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17312 (or 17306 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1383920 is about 1176.4012920768. The cubic root of 1383920 is about 111.4389458423.

The spelling of 1383920 in words is "one million, three hundred eighty-three thousand, nine hundred twenty".