1384320 has 128 divisors (see below), whose sum is σ = 5091840. Its totient is φ = 313344.

The previous prime is 1384309. The next prime is 1384337. The reversal of 1384320 is 234831.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 13389 + ... + 13491.

It is an arithmetic number, because the mean of its divisors is an integer number (39780).

2^1384320 is an apocalyptic number.

1384320 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 1384320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2545920).

1384320 is an abundant number, since it is smaller than the sum of its proper divisors (3707520).

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

1384320 is a wasteful number, since it uses less digits than its factorization.

1384320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1384320 is about 1176.5712898078. The cubic root of 1384320 is about 111.4496813579.

The spelling of 1384320 in words is "one million, three hundred eighty-four thousand, three hundred twenty".